MCKINNEY, TX - FEBRUARY 08: Republican presidential candidate, former U.S. Sen. Rick Santorum arrives at a campaign event at the Bella Donna Chapel on February 8, 2012 in McKinney, Texas. Rick Santorum swept all three Republican voting contests last night in Colorado, Minnesota and Missouri. (Photo by Tom Pennington/Getty Images)
(USA TODAY) -- Rick Santorum is surging in a new national survey, climbing to second place in the Gallup daily tracking poll.
Santorum, who swept contests in three states earlier this week, is now tied with a fading Newt Gingrich. Both have 20 percent support among registered Republican voters in the Gallup Poll.
Mitt Romney is still leading with 36 percent. Ron Paul is in fourth with 10 percent support.
The tracking poll is a five-day average and includes at least one day of polling since the former Pennsylvania senator won contests in Minnesota, Colorado and Missouri on Tuesday night.
Santorum's support in the Gallup daily tracking poll has grown four percentage points since interviews conducted from January 30 through February 3.
Gingrich, meanwhile, has dropped six points since losing the Florida primary to Romney.