For the first time in five Zogby polls of likely Democratic caucus voters conducted in Iowa this year, Hillary Clinton has moved into sole possession of first place. At 30 percent, Clinton's measured support is also the highest received by any Democratic candidate in Zogby's 2007 horserace polling in the Hawkeye State. Clinton also reached the 30 percent mark in American Research Group's survey three weeks ago.
John Edwards came in second at 23 percent. The former North Carolina Senator's base of support in Iowa is still strong, however; Zogby has measured his support between 23 and 27 percent in all five polls this year.
The telephone survey, taken August 17-19, found Barack Obama in third place with 19 percent and Bill Richardson in fourth with 10 percent. Richardson has now consistently reached the double-digit mark in almost all recent polls in Iowa.
Joe Biden came in fifth with 3 percent, followed by Dennis Kucinich at 1 percent. Neither Chris Dodd nor Mike Gravel received a measurable amount of support. Thirteen percent of likely Iowa caucus voters were not sure which Democratic candidate they would support at this time.