Why do GOP primary voters keep reelecting the same politicians who consistently betray them?

Ruben Navarrette : Republicans surrendering to Democrats is not a new concept, and this past week ’s border bill “negotiations” is just another example.

He says some of the “reddest” states in the country elect the worst Republicans .

Both senators were overwhelmingly supported by the majority of GOP primary voters in their last reelection bids.

GOP establishment types have figured out that they don’t need a strong conservative track record to win Trump ’s endorsement.

But conservatives have shown they can be a powerful influence in kicking establishment figures to the curb.

Imagine how different the Republican Party would look if conservatives employed this same type of focus and drive to oust establishment candidates in GOP primaries.