With just six weeks until the Iowa caucuses, some Democrats say they don’t expect a likely nominee to emerge anytime soon after early-voting states hold their contests. Instead, they’re preparing for a bruising four-way match-up that could drag on for months as candidates compete for the chance to challenge President Trump.

Former Vice President Joe Biden and Sen. Bernie Sanders (I-Vt.) have consistently topped nationwide polls, but Sen. Elizabeth Warren (D-Mass.) and South Bend, Ind., Mayor Pete Buttigieg remain key contenders who show no signs of slowing down.

“It’s going to be uglier than ugly,” one Democratic strategist said, pointing to surveys showing there is no clear winner across the first four states in the nominating process. “It’s going to be a bloody slugfest. And the thing a lot of us fear is that Trump will benefit from all of it.”