Fox News Poll: Trump gains ground in Iowa

Republican presidential front-runner Donald TrumpDonald John TrumpBiden slams Trump over golf gif hitting Clinton Trump Jr. declines further Secret Service protection: report Report: Mueller warned Manafort to expect an indictment MORE is back atop the GOP field in a new Fox News Poll with 34 percent support.

The latest results show an 11-point gain for the real estate mogul among Republican caucus-goers in the past two weeks.

Sen. Ted CruzRafael (Ted) Edward CruzSenate Dems hold floor talk-a-thon against latest ObamaCare repeal bill Overnight Finance: CBO to release limited analysis of ObamaCare repeal bill | DOJ investigates Equifax stock sales | House weighs tougher rules for banks dealing with North Korea GOP state lawmakers meet to plan possible constitutional convention MORE is in second place in the poll, released Sunday morning, with 23 percent.

Sen. Marco RubioMarco Antonio RubioOvernight Defense: Senate passes 0B defense bill | 3,000 US troops heading to Afghanistan | Two more Navy officials fired over ship collisions Senate passes 0B defense bill Trump bets base will stick with him on immigration MORE then has 12 percent to hold the third spot.

Both Cruz and Rubio saw their support fall slightly in the latest survey, by 4 points and 3 points, respectively.

No other GOP candidate has double-digit support, pollsters found.

Fox News quoted Republican pollster Daron Shaw, who conducts the poll with Democratic pollster Chris Anderson, as saying, “We tend to over-interpret every little thing in a presidential race, but here we actually have solid evidence Trump didn't just win last week in Iowa -- he won it by enough to put some distance between himself and Cruz.”

The poll of 378 likely Republican caucus-goers, conducted Jan. 18-21, has a 5 percent margin of error.

The Fox News Poll also shows Trump holding his lead in New Hampshire with 31 percent support. Cruz follows with 14 percent while Rubio has 13 percent.