The PAC is run by former GOP Congressman Steve LaTourette, which should come as a surprise to no one.

Via The Hill:

Labor unions are funneling cash to a super-PAC tied to a former lawmaker that is working to elect centrist Republicans to Congress.

Unions have contributed about $765,000 so far to the Defending Main Street Super-PAC, which is associated with former GOP lawmaker Steve LaTourette (R-Ohio), according to Federal Election Commission records.

The total, while small in the new big money era of campaign politics, is an unusually strong show of support from labor for a Republican venture.

LaTourette was considered one of the more labor-friendly Republicans while on Capitol Hill, and those relationships are paying dividends in his new career as a lobbyist and Republican power broker.

“During my 18 years in the House, I never believed you have to be anti-union to be a good Republican,” LaTourette told The Hill.

The labor support for LaTourette’s venture has rankled conservative activists, who are working to defeat centrist candidates in the GOP primaries.

“Now that he’s cashed out and makes his living as a lobbyist, he’s probably hoping to sign these unions up as clients, so he can line his own pockets with their money while helping what are essentially Democrats get reelected to the House,” said Barney Keller, a spokesman for the conservative Club for Growth.