DES MOINES, Iowa - The top three Democratic presidential candidates have begun focusing intensely on becoming the second choice among supporters of less-popular candidates such as Delaware Sen. Joseph R. Biden Jr. and New Mexico Gov. Bill Richardson, in a behind-the-scenes battle that could decide the outcome of Thursday's Iowa caucuses. The effort centers on the brief and unpredictable moment that will occur just after the first votes are cast in the state's 1,781 caucus meetings. Under the unusual rules of the Democratic caucus, candidates who do...
photo: AP/Charles Dharapak
