One Senate seat here may not be enough for Steve Bannon. If the former White House strategist gets his way, Mississippi's two long-serving establishment Republican senators won't be in office by the start of the next Congress. In regular phone calls over the past several months, Bannon has urged state Sen. Chris McDaniel to challenge Sen. Roger Wicker in a primary next year, and he also wants Gov. Phil Bryant to send himself to Washington if Sen. Thad Cochran, who is 79 and in poor health, retires before his term ends in 2020, according to people familiar with Bannon's plans. "We conservatives in the state, we're going to go after both of those seats — one way or the other," McDaniel told NBC News.