Vermont Sen. Bernie SandersBernie SandersPoll: Harris, Michelle Obama lead for 2024 if Biden doesn't run Bernie Sanders' ex-spokesperson apprehensive over effectiveness of SALT deductions BBB threatens the role of parents in raising — and educating — children MORE  (I) during an interview late Tuesday refused to rule out running for the White House in 2020.

During an appearance on "The Late Show with Stephen Colbert," Sanders was asked if he was willing to put aside all speculation and announce that he would not be running in the coming election.

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“No,” Sanders abruptly answered to a roar of cheers and applause from the audience.

"But, what I have said time and time again,” Sanders, who ran in 2016, continued, “my focus right now is on 2018 and to do everything that I can to end one-party rule of the House and the Senate.”

“I’m working really, really hard on that,” Sanders said, while adding that it is still “too early to be talking about 2020.” 

“Well, please come back when its not too early,” Colbert said.

Sanders finished third among possible 2020 candidates in a poll of registered Democratic voters earlier this summer.

Vice President Joe BidenJoe BidenSouth Africa health minister calls travel bans over new COVID variant 'unjustified' Biden attends tree lighting ceremony after day out in Nantucket Senior US diplomat visiting Southeast Asia to 'reaffirm' relations MORE was the front-runner in Harvard CAPS/Harris’s June poll with 32 percent.

Hillary ClintonHillary Diane Rodham ClintonRepublicans seem set to win the midterms — unless they defeat themselves Poll: Democracy is under attack, and more violence may be the future Popping the progressive bubble MORE, the party’s 2016 nominee, finished second with support from 18 percent, while Sanders was third with 16 percent.

Sen. Elizabeth WarrenElizabeth WarrenPoll: Harris, Michelle Obama lead for 2024 if Biden doesn't run Biden eyes new path for Fed despite Powell pick Equilibrium/Sustainability — Presented by Southern Company — Storms a growing danger for East Coast MORE (D-Mass.) had 10 percent.