(CNN) – Two years is a long time in politics.
The man who was on then-candidate Barack Obama's shortlist for a running mate in 2008 is now touting his staunch opposition to the president.
Democratic Rep. Chet Edwards – the longtime congressman who faces an uphill battle for reelection in his conservative-leaning Texas district - launched a new ad Friday that declares, "When President Obama and Nancy Pelosi pressured Chet Edwards, Chet stood up to them and voted no."
The ad – among the toughest this election cycle from a Democrat who is distancing himself from the president – specifically touts Edwards' no votes on health care reform and cap and trade, as well as several other votes the Democratic leadership has opposed.
"Chet votes with the conservative Chamber of Commerce sixty-seven percent of the time," the ad states.
Edwards, who has represented parts of central Texas (including former President George W. Bush's hometown of Crawford) since 1991, is battling Republican businessman Bill Flores to hold onto his seat. Polling is sparse, but some have suggested Edwards is down by more than 10 points.
Flores has repeatedly attempted to link Edwards with Washington Democrats in this cycle of anti-incumbency, launching a recent ad that said, "Chet's silent about voting with Nancy Pelosi 96 percent of the time."
Megan Jacobs, Edwards' communication's director, said the congressman will continue to show his distance from his Democratic colleagues back in Washington.
"We've always talked about how Chet is an independent, and will continue to do so," she told CNN.