For months, Mark Wagner stuck by John McCain, even as the economy stalled and other Americans came to blame Republican leadership. Then, about three weeks ago, the deepening economic downturn pushed him to reconsider.

Now, the Florida salesman and staunch Republican has abandoned the GOP ticket. Sarah Palin, he thinks, looks under-equipped to be vice president. And McCain, he says, displayed an unsteady response to what may be a global economic depression.