U.S. state where neither major party or candidate has overwhelming support, making it key to control of the Presidency or Senate
]] In American politics, a swing state (also known as battleground state, toss-up state, or purple state) is any state that could reasonably be won by either the Democratic or Republican candidate in a statewide election, most often referring to presidential elections, by a swing in votes. These states are usually targeted by both major-party campaigns, especially in competitive elections. Wikipedia