But no candidate is receiving even as much as 25% of the vote:

Republicans are most likely to name Mitt Romney and Newt Gingrich as their first choice for their party's 2012 presidential nomination, with Herman Cain close behind. Among all Republicans nationwide, Romney is the choice of 20% and Gingrich 19%. Among Republican registered voters, Gingrich is at 22% and Romney at 21%.

[...]

These results are based on a USA Today/Gallup poll of 1,062 Republicans and Republican-leaning independents conducted Nov. 13-17. Compared with the prior poll, conducted Nov. 3-6, Gingrich's support has increased from 12% to 19% among all Republicans. His support has gone up in each of the last three polls after bottoming out at 4% in August, and is now at his highest for the campaign to date.

Meanwhile, Cain, who has been dogged by allegations of sexual harassment, has seen his support dip slightly, from 21% to 16%. However, it remains well above the levels from earlier this year, which were generally in the single digits.

Rick Perry's support also slipped, to 8% in the latest poll, conducted after the two most recent candidate debates, including the Nov. 9 debate in which Perry failed to remember the names of all three cabinet departments he vowed to shut down if elected. Perry's support has declined in each of the last three updates after peaking at 29% in mid-August, shortly after he entered the race.

Romney, meanwhile, has been the leader or tied for the lead in nearly every poll conducted since May, when the Republican field largely came into shape.

Cain is showing surprising support considering the multitude of hits he's taken in recent days. And Ron Paul continues to hang around with 10% support. If Gingrich falters, one wonders if the GOP will drink the Paul Kool ade and throw their support to him.