Vermont Sen. Bernie SandersBernie SandersSanders: Trump was right about 'trying to end endless wars' Democrats battle over best path for Puerto Rico Bernie Sanders says he disagrees with Tlaib's call for 'no more police' 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 BidenBiden administration still seizing land near border despite plans to stop building wall: report Olympics, climate on the agenda for Biden meeting with Japanese PM Boehner on Afghanistan: 'It's time to pull out the troops' MORE was the front-runner in Harvard CAPS/Harris’s June poll with 32 percent.

Hillary ClintonHillary Diane Rodham ClintonChelsea Clinton: Pics of Trump getting vaccinated would help him 'claim credit' Why does Bernie Sanders want to quash Elon Musk's dreams? Republican legislators target private sector election grants MORE, the party’s 2016 nominee, finished second with support from 18 percent, while Sanders was third with 16 percent.

Sen. Elizabeth WarrenElizabeth WarrenDemocrats reintroduce bill to block US from using nuclear weapons first CEO who gave employees K minimum wage says revenue tripled 6 years later Forgiving K in school loans would free 36 million student borrowers from debt: data MORE (D-Mass.) had 10 percent.