 McCain began a search for a running mate to join the Republican ticket after clinching the Republican nomination.Former candidates Mitt Romney and Mike Huckabee were mentioned as possibilities, as were many other leaders in the Republican Party and the business world.Over Memorial Day weekend, McCain invited Romney, Florida Governor Charlie Crist, and Louisiana Governor Bobby Jindal to his Sedona, Arizona ranch for informal get-togethers intended to assess personal chemistry for possible running mate selection.