Rep. Bart Stupak is a loyal member of his party, but the nine-term Democrat from northern Michigan engaged in a little bipartisan campaign giving last month.

Stupak’s leadership political action committee, Bart’s Bridge PAC, gave $2,500 on Sept. 15 to the gubernatorial campaign of Rep. Zach Wamp (R-Tenn), according to the PAC’s filing Wednesday with the Federal Election Commission.

Stupak said he donated to Wamp “because he’ll be a great governor.— He said it’s not unusual for him to give money to Republican candidates.

“I give money based on the quality of the individual, and not necessarily always 100 percent party affiliation,— Stupak said.

Stupak’s PAC also gave $100 in August to the campaign committee of state Rep. Wayne Schmidt (R), who was first elected in 2008 in a district just outside Stupak’s Congressional district. Stupak’s PAC also gave to Schmidt’s campaign ahead of his 2008 election, to the surprise of Michigan Democratic activists.

But Stupak’s campaign donations in the third quarter went almost exclusively to Democrats. Bart’s Bridge PAC gave $5,000 to the Michigan Democratic Party and also donated to the campaign committees of eight House Democrats who are seeking re-election. It also gave to the Senate campaign of Massachusetts Rep. Mike Capuano (D) and to the House campaign of Bill Owens (D), an attorney from upstate New York running in the Nov. 3 special election in the 23rd district.

The Congressman’s campaign committee, Stupak for Congress, gave $25,000 apiece in the third quarter to the Democratic Congressional Campaign Committee and the Michigan Democratic Party.