Harris: Buttigieg 'naive' to suggest it's becoming two-person race between him and Warren

Sen. Kamala HarrisKamala Devi HarrisSanders allies in new uproar over DNC convention appointments Biden leads 2020 pack in congressional endorsements Harris on 2020 endorsement: 'I am not thinking about it right now' MORE (D-Calif.) laughed when asked about South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegBiden on whether Sanders can unify party as nominee: 'It depends' Biden lines up high-profile surrogates to campaign in Iowa Hill.TV's Krystal Ball: Failure to embrace Sanders as nominee would 'destroy' Democratic Party MORE’s prediction that the Democratic primary is a two-person race between him and Sen. Elizabeth WarrenElizabeth Ann WarrenBiden on whether Sanders can unify party as nominee: 'It depends' Overnight Health Care — Presented by Philip Morris International — HHS has no plans to declare emergency over coronavirus | GOP senator calls for travel ban to stop outbreak | Warren releases plan to contain infectious diseases Biden lines up high-profile surrogates to campaign in Iowa MORE (D-Mass.), calling his comments "naive."

"Well, I think ... that it’s naive for him to think that at this point, that the fate of this election has been determined," she said on CBS's "Face the Nation." "Just look at history. You might need to review to know that what’s happening right now is not necessarily determinative of the outcome."

Harris’s comments come after Buttigieg told John Heilemann that the race is shaping up to be a "two-way" between him and Warren an interview scheduled to air on Showtime Sunday.

“I think this is getting to be a two-way,” Buttigieg said. “It’s early to say. I’m not saying it is a two-way.”

Buttigieg responded to Harris's comments Sunday by telling The New York Times that "she's right," adding that the Iowa caucuses "are just the beginning."

The Harris campaign has gone "all in" in Iowa, Harris told "Face The Nation," after eliminating staff in New Hampshire last week. The California senator is struggling to keep her numbers up in the polls as former Vice President Joe BidenJoe BidenPerry delegation talking points stressed pushing Ukraine to deal with 'corruption' GOP senator airs anti-Biden ad in Iowa amid impeachment trial Biden photobombs live national news broadcast at one of his rallies MORE, Sen. Bernie SandersBernie SandersNew campaign ad goes after Sanders by mentioning heart attack Biden on whether Sanders can unify party as nominee: 'It depends' Steyer rebukes Biden for arguing with supporter he thought was Sanders voter MORE (I-Vt.), Warren and Buttigieg consistently take the top four spots.

An Washington Post-ABC News poll released Sunday showed Biden topping the candidates with 28 percent support, followed by Warren, Sanders and Buttigieg. A new Fox News poll had the top four candidates ranked the same way.

Harris received 2 percent support in the Post-ABC poll and 3 percent in the Fox News poll.