Here come the Nevada caucuses...
Though polling Nevada caucus-goers is notoriously difficult and somewhat unreliable, recent surveys have shown former Secretary of State Hillary Clinton and Sen. Bernie Sanders in a dead heat in the state.
Clinton may have the slight institutional advantage. Her campaign has had paid staffers on the ground since last spring, and recently unleashed several notable campaign surrogates to bash Sanders over his mixed record on immigration, a key issue in the state.
But Sanders' recent surge in popularity and fundraising has helped the senator flood the airwaves with paid ads, while he has deployed dozens of paid staffers from Iowa and New Hampshire to make up ground.
Read our live-blog below for the latest updates.
2:16 p.m. EST - The caucuses opened at 11:00 a.m. local time. Reporters tweeted images of lines at caucus locations around the state.