How can a Senate be selected?

Each state elects two senators. Senators are elected by the state as a whole, as opposed to Representatives who are elected to represent a specific portion of the state. One of the state's senators is elected in each senatorial election, which are held two out of every three even numbered years (for example: 2000, 2002, 2006, 2008, 2012, 2016, ...). Senators serve a six year term.