In presidential politics of the United States, a swing state (also, battleground state or purple state, in reference to red states and blue states) is a state in which no single candidate or party has overwhelming support in securing that state's electoral college votes. Such states are targets of both major political parties in presidential elections, since winning these states is the best opportunity for a party to gain electoral votes. Non-swing states are sometimes called safe states, because one candidate has strong enough support that he or she can safely assume that he or she will win the state's votes.