Now that Iowa and New Hampshire are in the rear-view mirror, the Democratic presidential contest shifts to markedly different terrain in Nevada, where a largely urban and diverse electorate will test the breadth of Bernie Sanders' appeal and the durability of Hillary Clinton's coalition.
The caucuses kick off the 2016 presidential nominating contests, marking a new phase in a tumultuous election that has exposed Americans' deep frustration with Washington and given rise to candidates few expected to challenge for their party's nomination when they first entered the race.
Marco Rubio, Jeb Bush, John Kasich and Chris Christie, the four Republican candidates in a showdown for their party's traditional supporters, closed last year with roughly as much money in the bank combined as Ted Cruz, the conservative insurgent they hope to topple.
But most will also have their eye on New Hampshire, where they're hoping a strong showing in the Feb. 9 primary will jump start their white house hopes.