Newt Gingrich is...

...finished. Looks like all the pounding he's taken from the Republican establishment is working. Just check out Intrade this morning:

Republican Presidential Nominee in 2012

Mitt Romney 68.2%
Newt Gingrich 9.6%

Iowa Caucus Winner

Ron Paul 39.5%
Mitt Romney 36.2%
Newt Gingrich 11.0%

New Hampshire Primary Winner

Mitt Romney 78.9%
Ron Paul 10.0%
Newt Gingrich 2.4%

South Carolina Primary Winner

Mitt Romney 49.9%
Newt Gingrich 22%

Florida Primary Winner

Mitt Romney 55%
Newt Gingrich 15%

So Romney appears to have the nomination sewn up, right? The only remaining question is: Does Ron Paul mount a third-party bid and what percentage of the vote does he carry?