Jefferson was largely unpopular due to the fact that he was under federal investigation for corruption charges at the time, and therefore, a great many candidates emerged to challenge him. On the Democratic side, State Representative Karen Carter, State Senator Derrick Shepherd, New Orleans City Councilman Troy Carter, Orleans Parish School Board attorney Regina Bartholomew, John Edwards, Scott Barron, former congressional candidate Vinny Mendoza, and D.C. Collins ran. Republicans Joe Lavigne, an attorney; Eric Bradley; Lance von Uhde and Libertarian Rhumbline Kahn also ran, creating a very crowded race. On October 14, the Louisiana State Democratic party voted to endorse Karen Carter. In the first line of balloting, no candidate received a majority of the votes, so the top two candidates, Jefferson and Carter, advanced to a second line of balloting, which Jefferson ultimately won by a comfortable margin, despite the corruption charges against him. District 3 Incumbent Democratic Congressman Charlie Melançon won his first term 2004 by defeating Billy Tauzin III, the son of the retiring Congressman by only 569 votes, leading many to conclude that he was vulnerable to a Republican challenger. State Senator Craig Romero emerged as Melançon's chief competitor, though Democrat O.J. Breech and Libertarian James Blake also ran, but ultimately fell to Melançon by a surprisingly comfortable margin in this solidly conservative district based in the southern suburbs of New Orleans and south-central Louisiana. District 4 This district, based in northwestern Louisiana and greater Shreveport, is staunchly conservative and has consistently re-elected incumbent Republican Congressman Jim McCrery with solid margins since his initial election in 1988. This year proved to be no different, and Congressman McCrery walloped Democrats Artis Cash and Patti Cox and Republican Chester Kelley with over fifty-seven percent of the vote. District 5 Incumbent Republican Congressman Rodney Alexander was initially elected to this conservative, northeast Louisiana district in 2002 as a Democrat, but switched to the Republican Party in 2004 and was re-elected for the first time as a Republican. In 2006, he was re-elected in a landslide over Democrat Gloria Hearn, Libertarian Brent Sanders, and independent John Watts. District 6 This conservative district is based around the Baton Rouge metropolitan area and was represented by Republican Congressman Richard Baker. Baker sought his eleventh term in Congress and faced no Democratic challenger, but did square off against Libertarian candidate Richard Fontanesi, a contest that he won in an overwhelming landslide. District 7