Precedents such as the government's blocking of AT&T's purchase of T-Mobile US suggest a Comcast-TWC deal "could face a number of hurdles in the Obama administration," Pai said. "A Republican administration likely would be more inclined to approve a deal."
TWC has already turned down two bids from Charter Communications (CHTR), the WSJ reports, adding that Comcast and Charter are unlikely to make a joint offer.
While the interest in TWC has sent the telecom carrier's shares soaring, it has also hurt its bonds, due to fears about a debt overhang that a deal could bring. The price of TWC's 30-year bond that matures in 2042 has tumbled 17% since the merger chatter began.