It???s worth seeing, and not just so you can listen to Herman Cain sing or see Marcus Bachmann thumb wrestle people for votes.Because outside the tricked-out tour buses and slicked-back soundbytes, there???s still a lot to value about a political process that, by necessity, takes place mostly on the ground.???Caucus??? opens Oct. 25 in Des Moines, Oct. 26 in Iowa City and at select Fridley Theater