Romney's lead over rivals grows wide
Republican presidential front-runner Mitt Romney has built a lead in the race for his party's nomination that is effectively, if slowly, closing off his rival's chances of overtaking him in the battle to challenge President Barack Obama in November.
The former Massachusetts governor's victories in six of 10 states that held votes earlier this week left former Sen. Rick Santorum and Newt Gingrich, the former speaker of the House of Representatives, with few paths to deny Romney the nomination. One is an ugly and divisive fight at the Republican National Convention this August in Tampa, Florida. (AP)
