Today Iowa had it’s state Democratic convention, and according to NBC’s Chuck Todd:

The state’s 99 county Democratic parties held conventions today and the two campaigns were actively fighting to gain even more pledged delegates. At stake: the 14 pledged delegates John Edwards earned during the Jan. 3 Iowa caucuses. Tonight, the Obama campaign claimed a gain of 7 pledged delegates, added to the 16 they earned on Jan. 3.

I averaged out the difference between the major media outlets’ estimates of the delegate lead (Washington Post, New York Times, AP, CNN, ABC, CBS & NBC). Right now Obama has a 123 delegate lead over Clinton, including among superdelegates. Since her Ohio win, she has lost 7 super delegates, while Obama netted 6 today alone. She also lost the Texas caucus, allowing Obama to net more delegates out of Texas.

Update: 
Looks like Obama will gain two more delegates after last night. According to Todd:

Last night, when I reported the net gain of 7 delegates for Obama out of yesterday’s 99 county Democratic conventions, it was based on 96% of conventions reporting. But there were two Cong. districts where Edwards was teetering on the edge of viability, the 1st and the 4th. Well, Edwards teetered the wrong way and Obama netted the delegates. So, here are the final results: … the overall delegate take for each candidate: 25 for Obama (that’s up from 16 during the Jan. 3 caucuses). 14 for Clinton (that’s down one from her 15 during Jan. 3). And 6 hung with Edwards, that’s down from 14 on Jan. 3.