More: More than half the 14 delegates allocated to John Edwards on the basis of caucus night projections switched Saturday to Obama.

Iowa Democratic Party officials said that with all of the delegates picked, Obama claimed 52 percent of the delegates elected at county conventions on Saturday, compared with 32 percent for Clinton. Some of the delegates picked at Saturday's conventions were sticking with Edwards, even though he's dropped from the race since Iowa held its caucuses in January.

Democratic Party projections said the results mean Obama increased by nine the number of delegates he collects from the state, getting a total of 25 compared with 14 for Clinton and six for Edwards.

Counting Saturday's new figures from Iowa and California, an Associated Press delegate tally showed Obama with 1,617 delegates and Clinton with 1,498.

"It means the Obama people are very organized," said Iowa Chairman Scott Brennan. "They have been working very hard for these conventions."