Today, March 1, 2016, is the biggest single day this election season for presidential candidates to rack up the delegates needed to win their party's nomination. It could be a turning point for remaining candidates.
Alabama, Arkansas, Georgia, Massachusetts, Minnesota, Oklahoma, Tennessee, Texas, Vermont and Virginia will hold primaries for both parties.
Alaska will hold its Republican caucus and Colorado Democrats will caucus for a candidate.
Come back to this site tonight to see updating coverage of the elections, or watch the votes come in live at our partner site, Electon 2016 Live at madison.com.