FROM CNN's Jack Cafferty:
The implosion of Herman Cain's campaign to be the GOP presidential candidate seems to be just one more thing working in favor of Newt Gingrich and against Mitt Romney.
Since Cain suspended his campaign over the weekend, it appears Gingrich has been the beneficiary of a good amount of Cain's former support.
Gallup polling shows that over the past month, as Cain's support went from 22% to nothing, when he ended his bid, Gingrich's support climbed from 13% to 37%. That's a 24-point jump.
Mitt Romney's support has remained steady at 22% over the same time.
Overall, the first ever Gallup daily tracking poll in this race shows Gingrich leads Romney nationwide by 15 points, 37% to 22%. Gingrich's 37% is the highest Gallup has measured this year for any candidate.
Plus, Gingrich tops Romney in many categories:
His lead is especially large among conservative Republicans and tea party supporters.
Gingrich also fares better than Romney among every age group, among both women and men and in every region of the country. He's especially strong in the Midwest and the South.
Meanwhile the Gallup Poll shows all the rest of the candidates are in the single digits. That includes: Ron Paul, Rick Perry, Michele Bachmann, Rick Santorum and Jon Huntsman.
Once the voting starts in a few weeks in Republican primaries and caucuses, it's clear that many of these campaigns will come to an end pretty quickly.
But why wait? The handwriting is already on the wall for several Republican candidates.
Here's my question to you: Now that Herman Cain is out of the race, who else should drop out?
Tune in to "The Situation Room" at 5 p.m. ET to see if Jack reads your answer on the air.
And we'd love to know where you're writing from, so please include your city and state with your comment.