service for poll question in angular js

Question

Poll question in angular js

 

How to write a service for simple poll question,for example

 

Who will Be the Next P.M of India?

 

1)Modi  2)rahul

 

After 30 Days this question have to be replaced with some other like,for example

 

Which Party is better

 

1)congress  2)Bjp

 

 

in such a way the question have to be changed at regular intervals,

and the polling data have to be saved in database.

 

in db,data should be saved like this for first question:

 

Modi -45

 

rahul - 44

 

Depending on the number of votes the count should be increased.

 

Based on unique id we should restrict a user to a single vote