(CNN) - For the second straight day, Republican presidential candidate and Rep. Michele Bachmann's at the top of a new poll of likely Iowa GOP caucus goers.
According to a survey from the American Research Group, 21 percent of people questioned say they are backing the congresswoman from neighboring Minnesota for the GOP presidential nomination in their state's caucuses. Bachmann was at nine percent in ARG's April poll.
In second place at 18 percent, and within the survey's sampling error, is former Massachusetts Gov. Mitt Romney, who's making his second bid for the White House. Rep. Ron Paul of Texas, who's making his third run for the presidency, is in third place at 14 percent, followed at 11 percent by former Alaska Gov. Sarah Palin, who hasn't decided whether she'll launch a presidential campaign. Every one else is in single digits.
The ARG poll follows by one day an IowaRepublican.com survey which indicate put Bachmann at 25 percent, with Romney at 21 percent.
Both polls follow a much reported recent survey from the Des Moines Register which had Romney at 23 percent and Bachmann at 22 percent. That poll sparked some favorable stories for Bachmann, who earlier in June received positive headlines for her performance at the much watched CNN/WMUR/New Hampshire Union Leader GOP presidential debate.
A strong showing in next February's Iowa caucuses, which kick off the presidential caucus and primary calendar, is crucial for Bachmann's hopes of winning her party's nomination.
The release of the new surveys comes just under five weeks from a straw poll in Ames, Iowa. Bachmann and Pawlenty, as well as Paul and a few other candidates, are putting a lot of time and effort into getting supporters to attend the influential straw poll.
The American Research Group poll was conducted July 5-11, with 600 likely Iowa GOP caucus goers questioned by telephone. The survey's sampling error is plus or minus four percentage points.