The adoption of ________ would permit multiple parties to acquire seats in Congress because representation would be based on the percentage of votes that they receive in national elections

At the present time, __________ may vote in at least most contests in the Republican and Democratic primaries

a. only those registered with the party b. those registered with the party plus those who register as "decline to state" c. any registered voter d. anyone eligible to register to vote in general elections

The U.S. Constitution requires that senators be elected:

A) once in five years by popular vote. B) every second year by popular vote. C) every year by popular vote. D) every six years by popular vote. E) quarterly by popular vote.