With the Democratic nomination still up in the air, here's a round-up of the major primary elections and caucuses on the horizon that are likely to choose the winner.
Saturday: Kansas, Nebraska, Washington state and the U.S. Virgin Islands. Far-flung and relatively small, neither campaign has put much effort into these areas, though Barack Obama visited his grandfather's hometown last week in Kansas. Total delegates: 161.
Feb. 12: The Potomac Primary - Maryland, Virginia and the District of Columbia - isn't much bigger than the delegate haul Saturday, but the candidates can reach millions of Democrats via the Washington, D.C., media market. Clinton enjoys the support of Maryland Gov. Martin O'Malley, while Virginia Gov. Tim Kaine has been stumping for Obama. Total delegates: 168.
March 4: Texas, Ohio, Vermont and Rhode Island. Call it the Democrats' Second Super Tuesday, with 11 percent of the total number of delegates at stake. Texas and Ohio are the key prizes here, accounting for 193 delegates and 141 delegates, respectively. Hillary Rodham Clinton is leading in polls in both states, but Obama has yet to campaign in either. Clinton has been leading among Hispanic voters, a major force among Democrats in Texas, and polls show her with a healthy overall lead in Ohio. Total delegates: 370.
April 22: Pennsylvania. If the race isn't over yet, expect Clinton to make her stand in the Keystone State. She enjoys strong support among the state's elected Democratic establishment, including Gov. Ed Rendell, and the Democratic Party is dominated by working-class white people who have provided the base of her support in other states. The latest polls, including one last month by Franklin & Marshall College in Lancaster, Pa., give Clinton a 20-point lead over Obama among Democrats. But 57 percent were still undecided, or said they might change their minds. Total delegates: 158.