(CNN) – A new national poll released Monday shows Newt Gingrich surging to a statistical tie with rival presidential candidate Mitt Romney.
The former House speaker now has the backing of 28% of registered Republicans to Romney's 29% nationwide, according to the latest results from Gallup's daily tracking poll.
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Voters were surveyed Wednesday through Saturday, mostly before and partially after Gingrich's South Carolina primary victory.
The poll was also done during a week with two strong debate performances for the former House speaker, with voters questioned partly before but mostly after the CNN/Southern Republican Presidential Debate on Thursday night - just two days before the primary.
Gingrich's new poll numbers mark a big boost from his standing a week ago, shortly after the New Hampshire primary when 14% of those surveyed said they would back the candidate, while 37% preferred Romney.
The results come as both candidates storm through Florida ahead of the Sunshine State's critical primary on January 31.
Team Romney has already sharpened its offense against Gingrich, as the former Massachusetts governor has been hitting the former speaker as an un-electable, "highly erratic" Washington insider. On Monday, Romney warned voters Gingrich could result in an "October surprise" should he make it to the general election as the party's nominee.
Gingrich, meanwhile, continues to paint Romney as a "Massachusetts moderate" who couldn't go toe-to-toe with Obama and argued Romney's latest attacks are an act of desperation.
"If you've been campaigning for six years and you see it slip away, you get desperate," Gingrich said Monday at a campaign even in Tampa, Florida.
The same Gallup poll shows less drastic changes for the other two candidates in the race. Former Pennsylvania senator Rick Santorum had the support of 11%, down from 14% last week. Texas Rep. Ron Paul, who plans to largely skip campaigning in Florida, came in with 13% support, up one point from last week.
Gallup surveyed 1,221 Republicans and Republican-leaning independents by telephone Jan. 18-22, with a sampling error of plus or minus three percentage points.
– CNN Political Editor Paul Steinhauser contributed to this report.