A new poll of likely Iowa caucusgoers published Saturday shows South Bend, Ind. Mayor Pete Buttigieg nine percentage points clear of Sen. Elizabeth Warren, D-Mass., indicating the one-time longshot is now a force to be reckoned with in the race for the Democratic nomination.

The CNN/Des Moines Register/Mediacom poll showed Buttigieg with 25 percent support, a 16 percent increase over his numbers in the September version of the poll. Behind Warren (16 percent) came former Vice President Joe Biden and Sen. Bernie Sanders, I-Vt., who each garnered 15 percent support.