Primary elections are elections in which voters go to the polls to choose the nominee for a political party

While the United States has had several minor parties, only the two major parties have much of a chance to win elections. What features of the U.S. political system contribute to the dominance of two parties?

a. multimember districts and a proportional voting system b. single-member districts and a nonpartisan blanket primary system c. multimember districts and a winner-take-all voting system d. single-member districts and a winner-take-all voting system

A pocket veto

A. can be used by a president only once during a term in office, although the veto can be used twice if the president serves two terms. B. can only be used when Congress adjourns for the session within ten days of the bill being submitted to the president. C. means that the legislation cannot be reintroduced in the next Congress. D. was declared unconstitutional by the Supreme Court in 1936. E. is a veto in which the president does not send a veto message back to Congress.