Democratic contest wide open

The latest round of Democratic contests has left everyone asking, "Now what happens?"

Sen. Hillary Clinton says her wins Tuesday night mean voters think she can win in the fall.

The Texas caucuses -- which offer up about a third of the state's delegates -- are still too close to call.

Obama didn't lose his lead, but he lost his momentum. The Illinois senator was on a 12-contest winning streak since Super Tuesday before Clinton stopped him by winning the two big prizes Tuesday night.

CNN's latest delegate count has Obama with 1,520 delegates to Clinton's 1,424. To clinch the Democratic nomination, a candidate must get 2,025 delegates. But because the Democratic delegates are allocated proportionally, the race appears to be headed to the party's convention in August. Clinton or Obama would need substantial wins in almost all of the remaining contests to get the magic number.

The Democrats' next big primary is seven weeks away. The race shifts to Pennsylvania, where 158 delegates are at stake. Wyoming and Mississippi hold contests before then, but there aren't as many delegates up for grabs.

Both camps already have their Pennsylvania teams working hard.

"Pennsylvania on paper is a good state for Clinton. It's a lot like Ohio demographically. Like in Ohio, she has the support of the very politically active governor, Ed Rendell. So I think Obama has his work cut out for him there," said Mark Halperin, a political analyst with Time magazine.

The upcoming contests will be crucial in determining who holds the momentum, but the math's not there to crown a winner.

"There are not enough votes left among pledged delegates for anybody to win the nomination," said Mary Frances Berry, former chairwoman of the U.S. Civil Rights Commission. "One person's going to be ahead, one's going to be behind. It will come down to the superdelegates."

The nearly 800 superdelegates -- various party leaders and officials who cast their vote at the convention -- are free to vote for the candidate of their choice.

Based on superdelegates who have publicized their preference, Clinton leads Obama 238-199.