Woohoo. Pop! Open the champagne! Mitt Romney has won. Oh, wait a minute, nothing has really changed. Rick Santorum is still in the race. Newt Gingrich and Ron Paul are still in the race. Nothing has changed. I'm not sure what Rick Santorum is doing or wants to do. For some reason, he has drawn a line in the sand and it is Pennsylvania. I don't get it. So, what happens if he wins Pennsylvania? Nothing. There's not going to be a seismic shift of support towards Rick Santorum. I would not be surprised if Sen. Santorum doesn't win a few more states. That doesn't change the overall calculus. It is nearly impossible for him to win the Republican nomination without some huge floor fight, which I think is unlikely.
Mitt Romney captured presidential primaries in Maryland, the District and battleground Wisconsin, the biggest prize of the day, to complete a momentum-building, three-contest sweep Tuesday that cemented his status as the almost certain Republican nominee and put new pressure on rival Rick Santorum to reassess his candidacy.
With his campaign increasingly focused on President Obama and the general election, the former Massachusetts governor’s victories in Maryland and the District were never in doubt. He won both by crushing margins. In Wisconsin, where Romney and Santorum devoted most of their energies, the margin was narrower but nonetheless decisive.
With Tuesday’s primaries behind them, the candidates now look ahead to April 24, when Pennsylvania and four other states hold their primaries. Santorum, a former senator from Pennsylvania, can ill-afford to lose his home state and has keyed the future of his campaign to success there, a reality openly acknowledged by his advisers.