Sen. Bernie Sanders Bernie SandersSenate Republicans signal openness to working with Biden Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll Schumer, Sanders call for Senate panel to address election security MORE (I-Vt.) will join Democratic National Committee (DNC) Chairman Tom Perez in a cross-country outreach tour to states Democrats lost in 2016.

The trip will begin in Maine in mid-April and will reach several states, including Kentucky, Florida, Nevada and Arizona, according to The Washington Post.

“This is part of our effort to revitalize the Democratic Party, to turn it into a grassroots party — to tell people that Donald Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE’s agenda is not what he promised them,” Sanders told the Post.

“On issue after issue, he’s turned his back on working people and sided with the millionaire class.”

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The trip comes after a contentious race to lead the DNC. Perez — who was considered the "establishment" choice because he worked in the Obama administration as Labor secretary and had close ties to presidential nominee Hillary Clinton Hillary Diane Rodham ClintonBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Virginia Democrat blasts Trump's 'appalling' remark about COVID-19 deaths in 'blue states' The Hill's Campaign Report: Biden asks if public can trust vaccine from Trump ahead of Election Day | Oklahoma health officials raised red flags before Trump rally MORE — defeated Rep. Keith Ellison (D-Minn.), who had the backing of progressives like Sanders and Sen. Elizabeth Warren Elizabeth WarrenNo new taxes for the ultra rich — fix bad tax policy instead Democrats back away from quick reversal of Trump tax cuts It's time for newspapers to stop endorsing presidential candidates MORE (D-Mass.).

"During that campaign, Tom said that the Democratic Party had to be refocused, had to be rebuilt, and I trust that he will keep those promises," Sanders said. "The fact that he’s prepared to travel with me around the country and pick up half the cost of this is a positive sign."

Sanders and Perez will use the trip to drum up Democratic enthusiasm for special and midterm elections on the horizon. One such success story so far is Democrat Jon Ossoff raising an unprecedented $8 million for a House special election race in Georgia as he tries to flip a seat long held by Republicans.

“We’ve talked a lot about the need to compete everywhere, and when we talked about a 57-state-and-territory strategy, we meant it,” Perez said.

When the GOP had control of the White House and both chambers of Congress heading into the 2006 elections, Democrats famously used then-DNC Chairman Howard Dean's "50-state strategy" to surge to control of both chambers before winning back the White House two years later.