Murkowski has proven time and time again that she will pander to whomever can benefit her the most at the voting booth. Senator Koch from Ohio takes his orders directly from, well, the Kochs. Whatever he does or doesn't do depends entirely on which string his puppet masters tug on. What goes through Young's mind is anyones guess, I remember him saying a few years back that he only represents those that vote for him. In any event, for someone to say that they will blindly "support" their party's nominee for president also "endorses" that candidate. The two words are synonymous.