Republican presidential candidate Mitt Romney campaigned outside of Philadelphia and Pittsburgh on Monday, a day before Pennsylvania and four other states hold their primary contests.
Romney isn't concerned about the primary, but Pennsylvania will likely be an important swing state in the general election. And Monday also offered a chance to audition a potential running mate: Florida Sen. Marco Rubio.
At a Republican candidates' forum in Wisconsin before the state's primary earlier this month, a speaker who wasn't on the ballot had strong words for the GOP regarding its low standing among Hispanic voters.
"The way the party ... talks about immigration is going to impact the future course of this party and the future course of this nation," said former U.S. Attorney General Alberto Gonzales, the first Hispanic to hold the nation's highest law enforcement post.
Much of the Republican political establishment, many GOP voters and political analysts were telling Rick Santorum that the time had come for him to end his quest for his party's presidential nomination even before Tuesday when he failed to win any of three primaries.
Those calls had only increased by Wednesday as Santorum fell further behind Romney in the delegate count.