Today, both Barack Obama and Hillary Clinton each received an endorsement from a moderate Democratic superdelegate.

Oklahoma Governor Brad Henry threw his support to Barack Obama citing his view that Obama can bridge chasms in the political divide.

I believe Senator Obama is uniquely positioned to unite our nation and move beyond the divisiveness and partisan skirmishes that too often characterize politics as usual in Washington.

After the win over Barack Obama in Pennsylvania, Hillary Clinton received a superdelegate endorsement from Tennessee's Eighth Congressional District Representative, John Tanner. Within his endorsement, Tanner notes that Hillary Clinton possesses the qualities of being a "smart, pragmatic leader who understands the grave situation our country faces."

Both Governor Henry and John Tanner represent the centrist wing of the Democratic Party.

Governor Henry, who is up for re-election in 2008 in a state that voted for George W. Bush over John Kerry with 66 percent of the vote, describes himself as a "fiscal conservative and social moderate." Henry also received the endorsement of the National Rifle Association.

John Tanner has represented his district since 1989, served as a Lieutenant in the United States Navy and is a co-founder of the Blue-Dog Democrats, a group of 37 self-described conservative and moderate party members in Congress.