Blood Red States, Low-T Senators

Why is it that the most blood red states in the country produce some of the most limp-wristed politicians? With an over 60% approval rating, you would think Senators like John Thune and Mike Rounds are hardcore anti-communists who have successfully fought back government overreach. In actuality, the GOP voter seems to be easily swayed and bamboozled by these RINO politicians who've overstayed their position in power.