    *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.
Election manifesto is a vision and misssion of contestent political parties that stand for upcoming election. This is an agenda for future plan made by the political parties wittheir the voters. If any political parties win the election that is bound to implement to the same that was pre-committed with the people.
A political party platform or platform is a formal set of principal goals which are supported by a political party or individual candidate, in order to appeal to the general public, for the ultimate purpose of garnering the general public's support and votes about complicated topics or issues.