A '''faithless elector''' is an elector that, within the [[United States]] [[Electoral College]], does not vote for the presidential candidate that whom won the state in which the elector is serving. Instead, the elector either casts his/or her vote for another person who is not in the presidential race, or decides not to cast a vote at all.
There are many reasons why an elector may choose to cast their single vote for another person or to opt out of voting. Many electors choose to vote for someone else merely because they are concerned with the capabilities of the candidate that their state voted to elect. In a recent example, four electors to the 2016 Electoral College opted to vote for separate individuals, rather than for [[Hillary Clinton]], although she won the states of [[Washington]] and [[Hawaii]].