[SJackson]

The best way to counter that line is for the GOP to nominate someone who doesn't so closely resemble Democrats in so many ways

While a divided convention is possible resulting in the GOP "nominating" a candidate, it's been decades since that's happened. The overwhelming probability is that the Republican nominee will be determined through the primary process. By voters. Who show up to vote. IMO the constant "my way or I'm staying home" drone is counterproductive. As the the "get the *ell out of here Rudy supporters" attitude. Not a good way to change minds, thus votes.

[dirtboy]

While a divided convention is possible resulting in the GOP "nominating" a candidate, it's been decades since that's happened

You don't need a divided convention - 1992 is a good example of what happens when the GOP standard bearer drifts too far leftward.

Rudy would be a hard lurch to port. Straight into oncoming Democrats.