This is the reverse of the previous question. Not every primary is “open;” many of them are “closed.” Closed primaries, much as the name suggests, are closed off from anyone who is not a registered party member. The advantages of closed primaries are legion: there can be no cross-voting, voting tends to be more cohesive and less scattered, etc. The disadvantages of closed primaries are also significant, however, grass-roots voting at this particular level tends to bring out the most extreme and the least representative of the party.

In both open primaries, and closed primaries, the top candidates are selected from two different political parties. General elections are not “before the general election,” and referendums have to do with issues and not office holders. "Blanket primary" is the correct answer because such primaries occur before the general election, deal with electing candidates, and the candidates do not have to be from different political parties.

This is a relatively interesting subtopic of presidential politics. Presidents are allowed to fund up to a certain amount of their campaign by using public funds (they are set aside/budgeted). If, however, they decide to use public funds, they must agree to an overall cap on the amount of money that they will expend, and they cannot accept any private donations. In other words, if the President opts-in, his campaign will be capped at a certain amount, and he may not solicit donations.

As prescribed by the U.S. Constitution each state appoints Presidential Electors who cast ballots for the candidate who they are pledged to. Each state has the same number of Presidential Electors as it has Congressional representation (the number U.S. representatives plus two for the two U.S. senators). Parties choose their Electors who are pledged to vote for a certain candidate and if that candidate wins the state then those Electors become the official Electors for the state. Most states have laws that force the Electors to vote for their pledged candidate in order to ensure that they don’t go rogue.

It is a commonly held belief that the American people elect the President and Vice President directly. In reality, it is the Electoral College that has the final vote and elects the Executive. In the early days of our government, it was believed that most of the voters were not educated sufficiently to vote for a good candidate for President and would vote for the individual whose promises were pleasing to them. Thus, the Electoral College was created. The people would vote, as we do today, then their votes would be taken by messenger to the Electoral College where individuals selected for their knowledge and impartiality would count the votes. Then, as today, each state had a selected number of representatives in the Electoral College. In the early days, these representatives would vote for the candidate that they felt was best suited to be President and Vice President regardless of the people’s vote. Today, representatives in the College are selected by the political parties and when we cast our votes, we are voting for them. They in turn will cast their votes according to the laws of their state and the vote of the people.  

While each of the answers is a real voter suppression tactic, threats of violence were performed on local community scales, as opposed to legal tactics enacted by municipal and state governments. 

The various boundaries of the United States' congressional districts within each state are generally determined by the State Legislatures of those states. 

An open-seat election occurs when an incumbent either dies or retires during office, leaving a seat completely vacant. This is particularly important, because in a standard election incumbent candidates win a large majority of the time, so an open-seat provides an opportunity to multiple people, who might otherwise have no chance of being elected.

The correct answer is "States moving their primaries earlier and earlier to have more influence on the outcome." States who have earlier primaries have more influence over the outcome of the nomination process. Because of this, states have moved their dates earlier and earlier in the calendar year, in a process known as frontloading.”

The Presidential election of 1968 was the last election in which a third-party candidate from outside the Democrat-Republican bloc was able to carry at least one state in an election. The independent candidate, George Wallace, won five Southern states by campaigning in favor of the continuation of segregation. The election is also considered an important realignment election, as much of the New Deal bloc of voters migrated towards Richard Nixon’s promise to “restore law and order.”