Ralph Nader has a message for Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE: "It ain't over till it's over."

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The former Green Party presidential nominee lambasted those calling on Sanders to end his campaign and back Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE.

"Between the June 14th D.C. Primary and the July nominating convention, lots can happen. As Yogi Berra said, 'It ain’t over till it’s over,' " Nader wrote in an editorial for Time magazine.

Nader said the presumptive Democratic nominee has "imploding potential," citing the FBI's investigation into her use of a private email server while secretary of State, controversy surrounding the Clinton Foundation and her refusal to release transcripts of her paid speeches to Wall Street groups.

The longer Sanders stays in the race, Nader continued, the more he can have an impact on the Democratic Party's platform.

"Sanders’s triad of protections for workers, students and patients, coupled with squeezing the unearned profits of Wall Street for a wide public works program, needs more visibility," Nader wrote.

His candidacy also helps to tackle the lack of political energy in the party.

"It is this absence of political energy, seduced by big money in politics, that the Sanders youth movement is aiming to topple. The Sanders people understand that breaking the momentum breaks the movement," Nader wrote.

He called for Sanders's movement to continue to motivate voters and demonstrators.

"That is why the longer range rebound of Bernie Sanders, right after Labor Day, must be mass non-partisan civic mobilization rallies driven by reforms and redirections that are for the people at large. That such class-levelling, peace-waging, freedom to participate in power for a more just society may benefit the Party’s electoral prospects is a collateral benefit from a galvanizing civil society," he said.