The first real votes of the 2012 campaign will be cast in Iowa today.  What will be happening at these caucuses? Will Rick Santorum dominate among social conservatives or will Rick Perry and Michele Bachmann divide that demographic?

And which state is likely to play the biggest role in determining the GOP nomination?

We discuss it all with David Johnson, a veteran of Sen. Bob Dole’s 1988 campaign which won the Iowa caucuses.

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