In Congress, Senator David Vitter and the three Republicans in Louisiana's House delegation – Jim McCrery, Rodney Alexander, and Charles Boustany endorsed Jenkins. Jenkins was also supported by House Minority Leader John Boehner, Minority Whip Roy Blunt, and Assistant Whip Eric Cantor. On April 25, former U.S. Senator John Breaux, now a resident of Maryland, endorsed Cazayoux on grounds that the self-styled "John Breaux Democrat" could work across party lines. In 1996, Breaux had also opposed Jenkins in the race against Mary Landrieu.