Texas Rep. Ron Paul has surged to second place in a new Iowa poll of likely Republican caucus goers, just one percent behind former House Speaker Newt Gingrich, the current front-runner.

Paul has consistently placed in the top tier of Republican presidential candidates in recent Iowa polls. With Iowans heading to vote in only three weeks, Gingrich holds a razor-thin 22–21 lead.

The poll, conducted by Public Policy Polling, found weakening support for Gingrich among self-identified tea partiers, and a dramatic rise in Paul’s favorability rating.