The deep-pocketed, fiscally conservative Club for Growth and Tea Party-affiliated FreedomWorks both backed him in his 2012 primary and are already spending against Pryor, making him their first target of the 2014 election cycle.
Cotton plays coy on possible Senate run
Some Republicans believe the freshman congressman, Harvard graduate and Army veteran is their best chance at taking down Pryor. Cotton easily won his 2012 race and is a favorite of a number of Washington-based conservative groups. But Cotton has made no signals about whether or not he'll run for the Senate — or even said whether he's considering it.