The Congressional Black Caucus voted Wednesday to support a "no confidence" measure against the leadership of Democratic National Committee Chairman Tom Perez.

'Our members were just not happy'

The CBC voted against Perez over a change in the rules of the party that would weaken the power of the vote of "superdelegates" in the party election process.

One CBC member told Politico that many were upset that the new rules would pit delegates against their constituents.

“So now if they want to be a delegate, they have to run against their constituents who want to be delegates, and it’s an unfair proposition,” explained CBC Chairman Cedric Richmond (D-La.).

“We don’t want to run against our constituents, so the caucus had made its position known," Richmond added. "It speaks for itself.”

Other members were wary of voting against the DNC when they had successfully wrestled away power of the House of Representatives from Republicans in the midterm elections.

Ultimately, they voted against Perez.

Laura Barrón-López of the Washington Examiner first tweeted the news, noting that the vote was "overwhelmingly" against Perez.

What else?

The DNC changed the superdelegate rule in August so that only regular delegates could vote in the first round of the presidential nominating ballot at the national convention.

CBC Chairman Richmond made it clear that the motion was not advocating that Perez should step down, only that there was some dissatisfaction among the CBC members.

“Our members were just not happy,” Richmond said. "It's not a motion saying he needs to go, it's a motion expressing real concern about where we are."