Sen. Joe Manchin (D-W.Va.) signaled Wednesday that he will not support carving out an exception to the filibuster for the debt limit, meaning Democrats don’t have enough votes to employ the so-called nuclear option. “I’ve been very, very clear where I stand on the filibuster. I don’t have to repeat that. I think I’ve been very clear. Nothing’s changed,” Manchin told reporters on Capitol Hill in Washington. Some Democrats want to nuke the filibuster for the debt ceiling because they’re refusing to use reconciliation to address it and Republicans oppose their current plans on the limit. President Joe Biden said late Tuesday that there’s a “real possibility” Democrats in the Senate invoke the option, which would lower the voting threshold from 60 to a simple majority. But Democrats only hold 50 seats in the upper chamber. That means they can’t afford a single “no” vote from a Democrat. With Manchin’s …