We're seeing these types of primary challenges in South Dakota too... why can't these practically perennial candidates realize that they're only causing trouble and just to let the strong candidates win? This is two cycles in a row we've blown opportunities, and even lost seats for the dumbest reasons. These no-compromise candidates need to learn that they either get a moderate Republican or a liberal Democrat in the Senate. It's not that hard.
They have a right to run and have their voices heard. It just so happens that the GOP isn't appealing to these groups anymore.