Allegheny County Republican Party Chairman Sam DeMarco was stunned when the news hit social media: “I am very disappointed with the president’s decision in picking Mastriano. It’s not exactly going out on a limb supporting someone in the lead three days before the election; it does guarantee him one win in this state on Tuesday,” said DeMarco in an interview with the Washington Examiner…

One prominent county chairman, who asked to remain anonymous but has hosted Trump in his county several times and voted for him twice, said, “Maybe Joe Biden’s not the only septuagenarian who should take a competency test?”…

“The president’s endorsement of Mehmet Oz was very hard to understand to begin with; now we have a three-way, a very tight three-way race for the critical Pennsylvania Senate seat, and to most of us, it appears that Oz is beginning to fade. So, what does the president do? He’s going to shore that up somehow and endorse a sure thing — it is very disappointing,” said Ball.