With Sen. Hillary Rodham Clinton's decision to stay in the Democratic race to the bitter end, she has signaled a delegate fight all the way to the party's convention in Denver this August. Both candidates appear in something of a stalemate. Political strategists have concluded that Clinton cannot overcome Sen. Barack Obama's pledged delegate lead by winning additional primaries. And despite his lead in electoral and delegate wins, Obama cannot seal his nomination without the support of the party's superdelegates. Clinton's decision, after winning in Texas, Ohio and Rhode Island this week that she would not capitulate has opened up...