Threats to internal validity are threats to generalizing the results to other populations

In the American federal system, political party organizations operate at the precinct, local, state, and national level. This characteristic of American political parties is referred to as

A) polarization. B) decentralization. C) pragmatism. D) alignment.

The system by which legislative seats are awarded to a party in proportion to the vote that party wins in an election is called _____ representation

A) majority B) proportional C) bipartisan D) electoral E) common