So add Thune’s name along with Pence to the list of those not running, and we are starting to get a clearer picture of what the 2012 Iowa Caucus field won’t look like. Still plenty of time for people to put their hat in the ring or decide not to. I believe that Thune not getting into the thick of this race will help former Minnesota Governor Tim Pawlenty out the most, possibly former Senator Rick Santorum (R-PA) as well.