I recently did some posts noting a developing split in the Democratic party ranks — a split likely to be greatly accentuated if, as expected, President Barack Obama announces hefty troop increases for a surge-but-we-won’t-call-it-that in Afghanistan. But there signs of cracks in the GOP’s wall as well — and here’s one of them:

Little Green Footballs, long considered one of the conservative mega-sites in terms of its big readership, has a post “Why I Parted Ways With The Right.” It’s in the form of a list which you can read in full here.

Here are the final paragraphs after the list:

The American right wing has gone off the rails, into the bushes, and off the cliff.

I won’t be going over the cliff with them.

This is a fascinating – and perhaps pivotal – time in American politics.

Both parties are now showing signs of impending splits, although time will tell how serious and politically consequential each of these splits are. Each party’s base (left in the Democrats; right in the Republicans) consider the word “moderate” a dirty word.

Some in the base of each party want to purge their party of some who they feel aren’t “real” Democrats/Republicans. Some Democrats want to push the party left…some Republicans want to push their party further right.

And it’s inevitable that some on the right and left may not agree with the push, tactics, or party line pressed by those who seek a more ideologically pure party. In the GOP, the split may come between those who do not buy into the party’s talk radio political culture and those who do. Right now, it’s clear the talk radio political culture wing is “winning” in terms of dominance.

Where will those who feel edged out (moderates, or those on the left or right who don’t go along with ideological purification) in each party go?

And what impact will this have on 2010 — and beyond?