Are you tired of the Republican establishment yet? If not, you just might be after reading this story.American Crossroads, a Republican Super PAC started by Karl Rove, a relic of the George W. Bush administration, has begun running ads designed to prop up Josh Shapiro, a Democratic candidate running for governor in Pennsylvania. His Republican opponent, Doug Mastriano, is currently trailing him by about 10 percentage points according to the latest RealClearPolitics average.But it appears Rove and his buddies are seeking to strengthen Shapiro’s lead over Mastriano by running a television ad that uses Democratic Pennsylvania Senate candidate John Fetterman...