Oxford Dictionary English swing state nounnoun BrE BrE//ˌswɪŋ ˈsteɪt// ; NAmE NAmE//ˌswɪŋ ˈsteɪt// (politics) Elections Add to my wordlistjump to other results(in an election for president in the US) a state where none of the candidates can be certain of getting the most support Arizona may be a swing state. swing state Democrats See related entries: Elections Wordfindercongresscaucus, congress, the Electoral College, House of Representatives, nomination, president, primary, running mate, senate, swing stateSee swing state in the Oxford Advanced American DictionaryCheck pronunciation: swing state oxfordlearnersdictionaries.com