In the race for the Democratic presidential nomination, meanwhile, a slip in John Edwards' numbers has allowed Hillary Clinton and Barack Obama to tighten their grips on the No. 1 and No. 2 spots, respectively. Among all likely Democratic caucus-goers, Clinton leads with
28.9 percent, followed by
Obama with 26.6 percent, Edwards with 20.0 percent, Bill Richardson with 7.2 percent and Joe Biden with 5.3 percent.
These results are from a random, statewide poll of likely caucus-goers in Iowa conducted Oct. 17 through 24. The Republican sample consists of 285 likely caucus-goers, with a margin of error of +/-5.8 percent.
The Democratic likely caucus-goer sample consists of 306 likely caucus-goers, with a margin of error of +/-5.5 percent.
http://news-releases.uiowa.edu/2007/october/102907poll-candidates.html
2.3% difference with a 5.5 MOE and give the sample size is a dead heat. that is actually just 7 votes in a sample of 306
http://news-releases.uiowa.edu/2007/october/102907hawkeye-poll-powerpoint.pdf
The powerpoint highlights an Obama Surge at Edwards expense while Hillary has hit a ceiling.