Obama takes Iowa

The Iowa Delegates for Democratic candidates breaks down like this:

Obama received 16 delegates, Hillary received 15 delegates and Edwards received 14 delegates. Yes it's true! Delegates are handed out based on percentages not by state, but by district.

More related info:

The Democratic Party's Voting Game

Democrats don't elect people, they elect delegates, who actually elect people. And 20% of those Democratic Party delegates are known as superdelegates.

Super-Delegates:

The Democratic National Convention, where the Democratic presidential ticket is formally agreed upon, has 796 superdelegates. Superdelegates to the Democratic Convention include all Democratic members of the United States Congress, various additional elected officials, as well as members of the Democratic National Committee.

A candidate needs a simple majority of the combined delegate and superdelegate votes to secure the nomination. Democratic delegates from state caucuses and primaries number 3253. This means that the total number of votes is approximately 4000, so superdelegates account for approximately 1/5 of all votes at the convention. Delegates chosen in the Democratic caucuses and primaries account for about 4/5 of the Democratic convention delegates.