A (notional) list of policies to be pursued or political issues to be addressed; a political programme or plan of action, especially of a particular individual or group; (hence) a set of underlying political motives, principles, or ideals.
Origin
1930s.
Definition of political agenda in US English:
political agenda
noun
A (notional) list of policies to be pursued or political issues to be addressed; a political programme or plan of action, especially of a particular individual or group; (hence) a set of underlying political motives, principles, or ideals.