A new Zogby poll shows Republican Mitt Romney pushing from third place into a small lead in Iowa, while Arizona Sen. John McCain has has remained steady and one-time front-runner Rudy Giuliani has fallen back.

Zogby says its poll shows that the Democratic race in Iowa is stable – former North Carolina Sen. John Edwards continues to hold a small lead over Sens. Hillary Clinton of New York and Barack Obama of Illinois.

The poll, conducted May 14 and 15, included 511 likely participants in the Democratic caucus next January, which carries a margin of error of plus or minus 4.4 percentage points. The survey of likely Republican caucus–goers includes 478 respondents and carries a margin of error of plus or minus 4.6 percentage points.

Click below to listen to audio commentary from John Zogby, president and CEO of Zogby International, and Fritz Wenzel, director of communications for Zogby.

• Edwards Strong in Iowa
• Obama - Conquering Challenges in Iowa
• GOP in Iowa - A True 3-Way Race
• Romney Really Catching On in Iowa
• Romney Up- Rudy Down in Iowa

Labels: Barack Obama, John Edwards, Mitt Romney, Rudy Giuliani