THE GOP SEEMS TO BE DIVIDED INTO 2 GROUPS

The Extremists and the Fundies. There have been some calls for the GOP to be more accepting of moderates but as John Hawkins clearly points out, that's not a possible future for the GOP:

You know, David Frum and Ross Douthat have always struck me as nice guys. Although I don't agree with him on a lot of things, I think Rob Dreher has had some interesting thoughts about environmental issues. Ramesh Ponnuru is certainly a sharp guy and Peggy Noonan is sometimes extremely eloquent.

That being said, let's compare this group with some other comparable names in the conservative movement. Say Rush Limbaugh, Sean Hannity, Thomas Sowell, Ann Coulter, Michelle Malkin, Charles Krauthammer, Mark Steyn, & Laura Ingraham.

Which group draws bigger crowds, sells more books, and has more influence?

It's pretty obvious that the conservative group leads legions while the "reformist group" can't fill up bingo halls. Incidentally, there's nothing on the horizon that seems poised to change that.