Will Arizona see a GOP primary fight between John McCain and J. D. Hayworth?

On his KFYI radio show Monday, Hayworth told his listeners that he went to Washington, D.C., this month and “we may have moved past due diligence into something that is more than a legal term of art . . . something called ‘testing the waters.’ So stay tuned on that.”
Federal Election Commission regulations allow candidates to set up preliminary “testing-the-waters” or “exploratory” committees without registering. But Hayworth would have to file an official statement with the FEC once he decides to become a candidate and spends or raises more than $5,000.

A fairly recent poll put McCain ahead, 56 percent to 36 percent.