It's tolerated because a large part of the population has become so politicized in how they look at life, that anything and everything the Republicans do is good as long as it's against the other team. There is some of this on the left side, but it's not nearly as prominent or as energized as the right has become over the last decade. And a large part of this demographic are either so enraged or so uneducated or a combination of both that don't understand how government works, so they scream right along with cocksuckers like McConnell when they promise to block their 'enemies,' and then turn right again to scream at those 'enemies' might possibly do the same thing.