And many consider him as a possible candidate for the Democratic presidential nomination in 2020.
Sanders says he still has many things to accomplish in the U.S. Senate and his planned announcement on Monday concerning his political future "will not come as a great surprise to anybody in the state of Vermont".
He said, in part, "If reelected, you can be sure that I will continue to be the fiercest opponent in the Senate to the rightwing extremism of Trump and the Republican leadership".
In a press release announcing the decision Monday, the two-term USA senator said he would seek another six years in Congress to continue fighting wealth inequality in the country.
Independent U.S. Sen. Bernie Sanders of Vermont says health care and infrastructure will be the most important issues in his campaign for re-election.
James Harden's Reputation Hangs on His Response to Steph Curry's 'Haymaker'
Sunday night's win was their 16th straight in the postseason at Oracle Arena, an National Basketball Association record. He started off the game 1-of-6 from 3, but ended the evening 13-of-23 from the field and 5-of-12 on 3-pointers.
Sanders reiterated on Monday his campaign statements from the 2016 campaign in which he called Trump a liar and a person who aims to divide Americans on the basis of race, religion and sexual orientation.
In his statement, Sanders listed off a slew of priorities he has publicly championed, including a national minimum wage of $15 an hour, a "Medicare for all single payer program" and free tuition at public colleges. He plans to maintain it during a third term in the U.S. Senate.
"That gives conservatives, Republicans, middle-of-the-road voters concern as they've dealt with bureaucracy and seen their tax burdens rise", said Mike Donahue of the Vermont Republican Party. Bernie Sanders (I-Vt.) attacked the Democratic National Committee (DNC), arguing that national Democrats are making the same mistakes that led to the Republican wave year of 2014.
"Yeah, it has come to my attention", said Sanders.