An electoral alliance (also known as a bipartisan electoral agreement, electoral pact, electoral agreement, electoral coalition or electoral bloc) is an association of political parties or individuals that exists solely to stand in elections.

Each of the parties within the alliance has its own policies but chooses temporarily to put aside differences in favour of common goals and ideology in order to pool their voters' support and get elected. On occasion, an electoral alliance may be formed by parties with very different policy goals, which agree to pool resources in order to stop a particular candidate or party from gaining power.

Unlike a coalition formed after an election, the partners in an electoral alliance usually do not run candidates against one another but encourage their supporters to vote for candidates from the other members of the alliance. In some agreements with a larger party enjoying a higher degree of success at the polls, the smaller party fields candidates under the banner of the larger party, with the elected members of the smaller party sitting with the elected members of the larger party in the cabinet or legislature. They usually aim to continue co-operation after the election, for example by campaigning together on issues on which they have common views.

By offering to endorse or nominate a major party's candidate, minor parties may be in position to influence the candidate's platform.