Enlarge photo illustration by: Todd Wiseman

President Obama has released an update to his list of volunteer fundraisers, also known as "bundlers," that raise money on his behalf. And Texas bundlers collected at least $3.4 million for Obama's 2012 campaign.

Enlarge photo by: Bob Daemmrich

Republican Tom Leppert makes a point during the TPPF's U.S. Senate candidate debate in Austin on January 12, 2012.

Former Dallas Mayor Tom Leppert has released his tax returns for 2008 through 2010, following the lead of his fellow Republican U.S. Senate candidates. Leppert reported an adjusted gross income of $443,000 in 2010, along with $95,856 in total taxes.

Enlarge photo by: Gage Skidmore

Hot on the heels of his fellow GOP Senate candidates Craig James and David Dewhurst releasing their tax returns, Ted Cruz has provided the Tribune with the last five years of his tax filings.

Enlarge photo by: Bob Daemmrich

Lt. Gov. David Dewhurst

Following the lead of fellow Republican U.S. Senate candidate Craig James, Lt. Gov. David Dewhurst has released his tax returns from 2009 and 2010. James on Thursday urged his fellow candidates to release their returns from the last five years.

Enlarge photo by: Bob Daemmrich

Former ESPN commentator and football player Craig James pauses during the U.S. Senate candidates debate sponsored by TPPF in Austin on January 12, 2012.

Craig James, the former sports commentator who is running to replace Republican U.S. Sen. Kay Bailey Hutchison, has released his tax returns from the last five years. Expect his opponents to follow suit. 

Enlarge graphic by: Propublica / Todd Wiseman

The team over at ProPublica has created a new news app called PAC Track that tracks Super PAC expenditures. The Make Us Great Again Super PAC has spent $3.8 million in support of Rick Perry. Endorse Liberty, the Ron Paul Super PAC, has spent nearly $3 million.

Enlarge photo illustration by: Todd Wiseman / Gage Skidmore

Rick Perry attacked Mitt Romney on Tuesday for his history at Bain Capital, a private equity firm. Similar companies, though, have contributed generously over the past 11 years to the Texas governor's campaigns.

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Want to track the results live in Iowa? Using data provided by the Iowa Republican Party via Google, WNYC has built an embeddable app that will update live as results come in this evening.