For a good time in headspinning, listen to this interview of Keyes by NPR's Michele Norris [npr] in which he talks circles around himself: primarily on the topics of how his carpetbagging is fundamentally different from Hillary Clinton's (which he decried1) and how his choice was both about and completely unrelated to his race.
I hope that their debates are televised.
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(1) In 2000 Alan Keyes said, "I deeply resent the destruction of federalism represented by Hillary Clinton's willingness to go into a state that she doesn't even live in and pretend to represent people; so I certainly wouldn't imitate it."