In Florida the Tea Party gets the arrows, but it's a reform agenda that drives Rubio's success

Marco Rubio appeared on a Sunday talk show this month to say something remarkable. The Republican running for Florida's Senate seat suggested we reform Social Security by raising the retirement age for younger workers. Florida is home to 2.4 million senior citizens who like to vote. The blogs declared Mr. Rubio politically suicidal.

The response from Mr. Rubio's primary competitor, Gov. Charlie Crist, was not remarkable. His campaign slammed Mr. Rubio's idea as "cruel, unusual and unfair to seniors living on a fixed income." Mr. Crist's plan for $17.5 trillion in unfunded Social Security liabilities? Easy! He'll root out "fraud" and "waste."

Let's talk Republican "civil war." Not the one the media is hawking, that pits supposed tea party fanatics like Mr. Rubio against supposed "moderates" like Mr. Crist. The Republican Party is split. But the real divide is between reformers like Mr. Rubio and Wisconsin Rep. Paul Ryan, who are running on principles and tough issues, and a GOP old guard that still finds it politically expedient to duck or demagogue issues. As Republicans look for a way out of the wilderness, this is the rift that matters.

And it's the divide playing out in Florida, even if that's not the press's preferred narrative. In conventional-wisdom world, Mr. Rubio is the darling of an angry grass roots, surging at the expense of the postpartisan Mr. Crist.