[He has an aversion to enforcing party discipline on major legislation and his unwillingness at playing hardball with RINO’s like Corker, Collins and Flake on major votes like the Kavanaugh Confirmation!]
*No one* can enforce party discipline because campaigns are funded by each individual pol who has to raise his own funds from private sources and win his own primary to become the nominee before running in the general. Party discipline is easy in parliamentary systems because the party provides their sole funding and can strike them off the list of party candidates. No one can remove a Republican nominee’s name off the ballot, and the funds he raises are his to spend even if he loses in the general. Corker and Flake are leaving, so it’s not clear what hardball means. I suspect Collins would win Maine even if she ran as an independent. In fact, doing so might even improve her chances of winning. And it would deprive the GOP of a fairly reliable vote.
Then explain how Dingy Harry and his descendants in congressional/Senate DimRat leadership are constantly able to enforce party discipline in their caucus on major legislation? Did you know that NOT ONE DimRat Senator voted for the Tax Cut Bill, not even one of the seriously endangered Red State DimRat Senators Voted for it!
If Kavanaugh gets confirmed after this 11th hour smear job it will also likely be by party line GOP vote - he may NOT get a single endangered Red State DimRat to vote for his confirmation!