    *NOTE to the author     there is a big difference between the two parties. Democrats are more liberal and Republicans are a lot more conservative.       Note to the Note   The question was related to the PARTIES, not the philosophy of individual members.
It works like this: a political party through its manifesto says-if you vote for me then I will do this for you. Uses: 1. Canvassing of vote for political parties 2. Helps people to decide which party to vote for 3.
The term pork barrel politics usually refers to spending which is intended to benefit constituents of a politician in return for their political support, either in the form of campaign contributions or votes.