As speculation surrounding his potential candidacy heats up, Matthews has also been asking advisers whether to step down from his MSNBC post well before his contract expires in June. At one recent meeting, he was advised that if he truly intends to run, he should resign from the network as soon as possible.

“We talked about the value of doing this now and six months from now. I advocated that he do this as soon as possible,” the operative said. “It’s the MSNBC stuff that’s going to jam him up. I said, ‘if you want to be a U.S. senator, step up and get into the race.’”

If Matthews is serious about running, some within the network hope he commits to the Pennsylvania Senate race sooner rather than later. Otherwise, his nightly presence on “Hardball” provides easy fodder to critics fueling the narrative that MSNBC is in the tank for the Democratic party.