A new presidential poll in Iowa has former Gov. Tim Pawlenty at 4 percent, putting him in fifth place among potential 2012 hopefuls.

The poll, conducted by Neighborhood Research Corp., also added Rep. Michele Bachmann halfway through the survey, and she finished in seventh with 2 percent (her percentage only includes respondents who had the option to pick her, according to polling director Rick Shaftan).

Mike Huckabee, the former Arkansas governor who won the Iowa caucuses in 2008, led the poll at 24 percent, followed by former Gov. Mitt Romney at 19 percent, former Alaska Gov. Sarah Palin at 11 percent, and former House Speaker Newt Gingrich at 8 percent.

But a quarter of respondents were undecided, and the field remains "wide open," according to the polling memo obtained by Politico. It's also still unknown how many of the top four frontrunners will actually enter the race.

Pawlenty's name recognition was at 64 percent, putting him slightly ahead of Bachmann's 60 percent. Pawlenty had a favorable-unfavorable rating of 16 percent-2 percent, while Bachmann's was 24-2.

Pawlenty has long been included in 2012 presidential polling, but Bachmann's name is new to the mix after reports emerged last week that she is weighing a presidential bid.

Of a potential Bachmann run, Shaftan said: "Bachmann could be dangerous if she is serious about the campaign and is taken seriously as a candidate (her support seemed to come from Huckabee in particular and also Palin, but these are small numbers and it's difficult to draw a conclusion).

Shaftan said that Pawlenty "could be a sleeper" based on his favorability, particularly if Indiana Rep. Mike Pence runs for governor instead of the White House in 2012.

Read the full polling memo here.