A fresh poll has good news for Sen. Barack Obama in his race for the Democratic presidential nomination, but it's different enough from other surveys that analysts say the results should be viewed with some caution.
A USA Today/Gallup poll released Tuesday showed the Illinois senator essentially tied with Sen. Hillary Rodham Clinton, D-N.Y. Obama had 30 percent, Clinton 29 percent - well within the poll's sampling margin of error of plus or minus 5 percentage points.
An ABC News-Washington Post survey released two days earlier showed Clinton leading Obama by a dozen points - more in line with several other recent surveys.
Obama's support in the USA Today/Gallup poll was not significantly different from that survey's results in May, when it found Clinton had a nine-point advantage. Clinton's support dropped 6 percentage points since then.
Story Continues Below
Karlyn Bowman, who studies public opinion polls at the conservative American Enterprise Institute, said that with at least seven months until the first votes for party nominations, voters' views are not yet deeply set.
Both surveys relied on responses from people who identified themselves as Democrats or Democratic leaning - not registered Democrats, who would be likelier to vote.