diff --git a/app/models/poll.rb b/app/models/poll.rb
index d815cba49..507c848aa 100644
--- a/app/models/poll.rb
+++ b/app/models/poll.rb
@@ -1,2 +1,4 @@
 class Poll < ActiveRecord::Base
+  has_many :booths
+  has_many :voters, through: :booths, class_name: "Poll::Voter"
 end
\ No newline at end of file
diff --git a/app/models/poll/booth.rb b/app/models/poll/booth.rb
new file mode 100644
index 000000000..a05f3d547
--- /dev/null
+++ b/app/models/poll/booth.rb
@@ -0,0 +1,6 @@
+class Poll
+  class Booth < ActiveRecord::Base
+    belongs_to :poll
+    has_many :voters
+  end
+end
\ No newline at end of file
diff --git a/app/models/poll/voter.rb b/app/models/poll/voter.rb
new file mode 100644
index 000000000..a517c3f34
--- /dev/null
+++ b/app/models/poll/voter.rb
@@ -0,0 +1,30 @@
+class Poll
+  class Voter < ActiveRecord::Base
+    belongs_to :booth
+    delegate :poll, to: :booth
+
+    validate :in_census
+    validate :has_not_voted
+
+    def in_census
+      errors.add(:document_number, :not_in_census) unless census_api_response.valid?
+    end
+
+    def has_not_voted
+      errors.add(:document_number, :has_voted, name: name) if has_voted?
+    end
+
+    def census_api_response
+      @census ||= CensusApi.new.call(document_type, document_number)
+    end
+
+    def has_voted?
+      poll.voters.where(document_number: document_number, document_type: document_type).exists?
+    end
+
+    def name
+      @census.name
+    end
+
+  end
+end
\ No newline at end of file
diff --git a/config/locales/activerecord.en.yml b/config/locales/activerecord.en.yml
index 07791e53c..32f4ef78f 100644
--- a/config/locales/activerecord.en.yml
+++ b/config/locales/activerecord.en.yml
@@ -82,6 +82,11 @@ en:
           attributes:
             max_per_day:
               invalid: "You have reached the maximum number of private messages per day"
+        poll/voter:
+          attributes:
+            document_number:
+              not_in_census: "Document not in census"
+              has_voted: "%{name} has already voted"
         proposal:
           attributes:
             tag_list:
diff --git a/config/locales/activerecord.es.yml b/config/locales/activerecord.es.yml
index d5b7f0005..a9047df7b 100644
--- a/config/locales/activerecord.es.yml
+++ b/config/locales/activerecord.es.yml
@@ -82,6 +82,11 @@ es:
           attributes:
             max_per_day:
               invalid: "Has llegado al número máximo de mensajes privados por día"
+        poll/voter:
+          attributes:
+            document_number:
+              not_in_census: "Este documento no aparece en el censo"
+              has_voted: "%{name} ya ha votado"
         proposal:
           attributes:
             tag_list:
diff --git a/db/migrate/20160914172016_create_poll_voters.rb b/db/migrate/20160914172016_create_poll_voters.rb
new file mode 100644
index 000000000..df5bb4585
--- /dev/null
+++ b/db/migrate/20160914172016_create_poll_voters.rb
@@ -0,0 +1,9 @@
+class CreatePollVoters < ActiveRecord::Migration
+  def change
+    create_table :poll_voters do |t|
+      t.integer :booth_id
+      t.string :document_number
+      t.string :document_type
+    end
+  end
+end
diff --git a/db/migrate/20160914172535_create_poll_booths.rb b/db/migrate/20160914172535_create_poll_booths.rb
new file mode 100644
index 000000000..a474aba49
--- /dev/null
+++ b/db/migrate/20160914172535_create_poll_booths.rb
@@ -0,0 +1,8 @@
+class CreatePollBooths < ActiveRecord::Migration
+  def change
+    create_table :poll_booths do |t|
+      t.string :name
+      t.integer :poll_id
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 082292471..205fc5f21 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20160914110039) do
+ActiveRecord::Schema.define(version: 20160914172535) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -270,6 +270,17 @@ ActiveRecord::Schema.define(version: 20160914110039) do
 
   add_index "organizations", ["user_id"], name: "index_organizations_on_user_id", using: :btree
 
+  create_table "poll_booths", force: :cascade do |t|
+    t.string  "name"
+    t.integer "poll_id"
+  end
+
+  create_table "poll_voters", force: :cascade do |t|
+    t.integer "booth_id"
+    t.string  "document_number"
+    t.string  "document_type"
+  end
+
   create_table "poll_officers", force: :cascade do |t|
     t.integer "user_id"
   end
diff --git a/lib/census_api.rb b/lib/census_api.rb
index 678a748c6..eadfc549e 100644
--- a/lib/census_api.rb
+++ b/lib/census_api.rb
@@ -61,6 +61,10 @@ class CensusApi
       end
     end
 
+    def name
+      "#{data[:datos_habitante][:item][:nombre]} #{data[:datos_habitante][:item][:apellido1]}"
+    end
+
     private
 
       def data
@@ -74,7 +78,7 @@ class CensusApi
       if end_point_available?
         client.call(:get_habita_datos, message: request(document_type, document_number)).body
       else
-        stubbed_response_body
+        stubbed_response(document_type, document_number)
       end
     end
 
@@ -97,8 +101,20 @@ class CensusApi
       Rails.env.staging? || Rails.env.preproduction? || Rails.env.production?
     end
 
-    def stubbed_response_body
-      {get_habita_datos_response: {get_habita_datos_return: {hay_errores: false, datos_habitante: { item: {fecha_nacimiento_string: "31-12-1980", identificador_documento: "12345678Z", descripcion_sexo: "Varón" }}, datos_vivienda: {item: {codigo_postal: "28013", codigo_distrito: "01"}}}}}
+    def stubbed_response(document_type, document_number)
+      if document_number == "12345678Z" && document_type == "1"
+        stubbed_valid_response
+      else
+        stubbed_invalid_response
+      end
+    end
+
+    def stubbed_valid_response
+      {get_habita_datos_response: {get_habita_datos_return: {datos_habitante: { item: {fecha_nacimiento_string: "31-12-1980", identificador_documento: "12345678Z", descripcion_sexo: "Varón", nombre: "José", apellido1: "García" }}, datos_vivienda: {item: {codigo_postal: "28013", codigo_distrito: "01"}}}}}
+    end
+
+    def stubbed_invalid_response
+      {get_habita_datos_response: {get_habita_datos_return: {datos_habitante: {}, datos_vivienda: {}}}}
     end
 
     def is_dni?(document_type)
diff --git a/spec/factories.rb b/spec/factories.rb
index 00884733e..ac7bb379b 100644
--- a/spec/factories.rb
+++ b/spec/factories.rb
@@ -259,10 +259,33 @@ FactoryGirl.define do
     user
   end
 
+  factory :poll do
+    sequence(:name) { |n| "Poll #{n}" }
+  end
+
   factory :poll_officer, class: 'Poll::Officer' do
     user
   end
 
+  factory :poll_booth, class: 'Poll::Booth' do
+    sequence(:name) { |n| "Booth #{n}" }
+    poll
+  end
+
+  factory :poll_voter, class: 'Poll::Voter' do
+    association :booth, factory: :budget_booth
+
+    trait :valid_document do
+      document_type   "1"
+      document_number "12345678Z"
+    end
+
+    trait :invalid_document do
+      document_type   "1"
+      document_number "99999999A"
+    end
+  end
+
   factory :organization do
     user
     responsible_name "Johnny Utah"
diff --git a/spec/features/management/document_verifications_spec.rb b/spec/features/management/document_verifications_spec.rb
index 674349815..130630762 100644
--- a/spec/features/management/document_verifications_spec.rb
+++ b/spec/features/management/document_verifications_spec.rb
@@ -47,7 +47,7 @@ feature 'DocumentVerifications' do
   scenario 'Verifying a user which does exists in the census but not in the db redirects allows sending an email' do
 
     visit management_document_verifications_path
-    fill_in 'document_verification_document_number', with: '1234'
+    fill_in 'document_verification_document_number', with: '12345678Z'
     click_button 'Check'
 
     expect(page).to have_content "Please introduce the email used on the account"
@@ -66,7 +66,7 @@ feature 'DocumentVerifications' do
     expect_any_instance_of(Verification::Management::Document).to receive(:under_sixteen?).and_return(true)
 
     visit management_document_verifications_path
-    fill_in 'document_verification_document_number', with: '1234'
+    fill_in 'document_verification_document_number', with: '12345678Z'
     click_button 'Check'
 
     expect(page).to have_content "You must be over 16 to verify your account."
diff --git a/spec/features/management/email_verifications_spec.rb b/spec/features/management/email_verifications_spec.rb
index 22987f317..d68d9bd5f 100644
--- a/spec/features/management/email_verifications_spec.rb
+++ b/spec/features/management/email_verifications_spec.rb
@@ -8,7 +8,7 @@ feature 'EmailVerifications' do
     user = create(:user)
 
     visit management_document_verifications_path
-    fill_in 'document_verification_document_number', with: '1234'
+    fill_in 'document_verification_document_number', with: '12345678Z'
     click_button 'Check'
 
     expect(page).to have_content "Please introduce the email used on the account"
@@ -30,7 +30,7 @@ feature 'EmailVerifications' do
     expect(page).to_not have_link "Verify my account"
     expect(page).to have_content "Account verified"
 
-    expect(user.reload.document_number).to eq('1234')
+    expect(user.reload.document_number).to eq('12345678Z')
     expect(user).to be_level_three_verified
   end
 
diff --git a/spec/features/management/managed_users_spec.rb b/spec/features/management/managed_users_spec.rb
index 78010bc39..6ac04b137 100644
--- a/spec/features/management/managed_users_spec.rb
+++ b/spec/features/management/managed_users_spec.rb
@@ -57,7 +57,7 @@ feature 'Managed User' do
       user = create(:user)
 
       visit management_document_verifications_path
-      fill_in 'document_verification_document_number', with: '1234'
+      fill_in 'document_verification_document_number', with: '12345678Z'
       click_button 'Check'
 
       within(".account-info") do
@@ -88,7 +88,7 @@ feature 'Managed User' do
       login_as_manager
 
       visit management_document_verifications_path
-      fill_in 'document_verification_document_number', with: '1234'
+      fill_in 'document_verification_document_number', with: '12345678Z'
       click_button 'Check'
 
       expect(page).to have_content "Please introduce the email used on the account"
diff --git a/spec/features/management/users_spec.rb b/spec/features/management/users_spec.rb
index 1a0618e60..694720cc0 100644
--- a/spec/features/management/users_spec.rb
+++ b/spec/features/management/users_spec.rb
@@ -9,7 +9,7 @@ feature 'Users' do
   scenario 'Create a level 3 user from scratch' do
 
     visit management_document_verifications_path
-    fill_in 'document_verification_document_number', with: '1234'
+    fill_in 'document_verification_document_number', with: '12345678Z'
     click_button 'Check'
 
     expect(page).to have_content "Please introduce the email used on the account"
@@ -45,10 +45,10 @@ feature 'Users' do
   end
 
   scenario 'Delete a level 2 user account from document verification page', :js do
-    level_2_user = create(:user, :level_two, document_number: 13579)
+    level_2_user = create(:user, :level_two, document_number: "12345678Z")
 
     visit management_document_verifications_path
-    fill_in 'document_verification_document_number', with: '13579'
+    fill_in 'document_verification_document_number', with: '12345678Z'
     click_button 'Check'
 
     expect(page).to_not have_content "This user account is already verified."
@@ -62,7 +62,7 @@ feature 'Users' do
     expect(level_2_user.reload.erase_reason).to eq "Deleted by manager: manager_user_#{Manager.last.user_id}"
 
     visit management_document_verifications_path
-    fill_in 'document_verification_document_number', with: '13579'
+    fill_in 'document_verification_document_number', with: '12345678Z'
     click_button 'Check'
 
     expect(page).to have_content "no user account associated to it"
diff --git a/spec/models/poll/voter_spec.rb b/spec/models/poll/voter_spec.rb
new file mode 100644
index 000000000..de4536243
--- /dev/null
+++ b/spec/models/poll/voter_spec.rb
@@ -0,0 +1,47 @@
+require 'rails_helper'
+
+describe :voter do
+
+  let(:poll) { create(:poll) }
+  let(:booth) { create(:poll_booth, poll: poll) }
+
+  describe "validations" do
+
+    it "should be valid if in census and has not voted" do
+       voter = build(:poll_voter, :valid_document, booth: booth)
+
+       expect(voter).to be_valid
+    end
+
+    it "should not be valid if the user is not in the census" do
+      voter = build(:poll_voter, :invalid_document, booth: booth)
+
+      expect(voter).to_not be_valid
+      expect(voter.errors.messages[:document_number]).to eq(["Document not in census"])
+    end
+
+    it "should not be valid if the user has already voted in the same booth" do
+      voter1 = create(:poll_voter, :valid_document, booth: booth)
+      voter2 =  build(:poll_voter, :valid_document, booth: booth)
+
+      expect(voter2).to_not be_valid
+      expect(voter2.errors.messages[:document_number]).to eq(["José García has already voted"])
+    end
+
+    it "should not be valid if the user has already voted in another booth" do
+      booth1 = create(:poll_booth, poll: poll)
+      booth2 = create(:poll_booth, poll: poll)
+
+      voter1 = create(:poll_voter, :valid_document, booth: booth1)
+      voter2 =  build(:poll_voter, :valid_document, booth: booth2)
+
+      expect(voter2).to_not be_valid
+      expect(voter2.errors.messages[:document_number]).to eq(["José García has already voted"])
+    end
+
+    xit "should not be valid if the user has voted via web" do
+      pending "Implementation for voting via web"
+    end
+
+  end
+end
\ No newline at end of file