In-person registration is the most common form of voter registration in the United States. It involves filling out a voter registration form at a designated location, such as a government office or a voter registration drive.

A provisional ballot is a ballot that is cast by a voter who is not registered or whose registration status is in question. The provisional ballot is held until the voter's registration status can be verified.

A voter challenge is the process of questioning a voter's eligibility to vote. This can be done by a poll worker, a political party representative, or another voter.

A poll watcher is a person who is appointed by a political party or candidate to observe the election process and ensure that it is conducted fairly.

Tabulation is the process of counting ballots and recording the results. This can be done by hand or by machine.

A recount is a process of重新计数选票以验证选举结果的准确性。 This is typically done when the results of an election are close or when there are allegations of voter fraud.

Certification is the process of officially declaring the winner of an election. This is typically done by a state or local election official.

A canvass is a process of reviewing the results of an election to ensure that they are accurate. This is typically done by a state or local election official.

An election contest is a legal challenge to the results of an election. This can be done by a candidate, a voter, or a political party.

The Supreme Court of the United States is the highest court in the United States and has the final say on all legal matters, including election contests.