The latest Fox News poll, conducted earlier this week, shows that support for Herman Cain and Newt Gingrich has quadrupled over the past two months, while support for every other Republican presidential candidate except for Ron Paul has declined. Since late August, when Fox conducted its first poll following Rick Perry’s entrance into the race, support for Cain among Republican primary voters is up 18 points (from 6 to 24 percent), and support for Gingrich is up 9 points (from 3 to 12 percent). Meanwhile, Perry’s support is down 19 points (from 29 to 10 percent), Michele Bachmann’s is down 5 points (from 8 to 3 percent), Mitt Romney’s is down 2 points (from 22 to 20 percent), Rick Santorum’s is down 1 point (from 4 to 3 percent), and Jon Huntsman’s is also down 1 point (from 1 to 0 percent). Ron Paul’s is up 1 point (from 8 to 9 percent).

All in all, Cain leads (with 24 percent support), with Romney in second (at 20 percent), and Gingrich in third (at 12 percent). Perry (at 10 percent) edges Paul (at 9 percent) for fourth.