BOSTON — In the latest GOP presidential contests, Mitt Romney blew out Rick Santorum in Arizona, winning 47 percent of the vote to Santorum's 26 percent. In Michigan, Romney's 41 percent just eked out Santorum's 38 percent.
The candidates now must set their sites on Super Tuesday. On March 6, 10 states — including Massachusetts — hold primaries and caucuses.
Much of the focus will be on the battleground state of Ohio, with 66 GOP delegates at stake.
Bill Cohen of Ohio Public Radio joined WBUR's Morning Edition to talk about what's at stake in Ohio.
This program aired on February 29, 2012.