Former President Bill Clinton William (Bill) Jefferson ClintonD-Day for Trump: September 29 Trump job approval locked at 42 percent: Gallup If Trump doesn't know why he should be president again, how can voters? MORE on Friday said that his wife is a "change-maker" capable of following in the footsteps of President Obama.

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"She's the best change-maker I've ever known," he said at a rally in Memphis, Tenn.

The former presdient also said Obama often gets unfairly criticized.

“A lot of people say, ‘Oh, well, you don’t understand, it’s different now. It’s rigged,’” Clinton said at a rally in Memphis, Tenn.

“'Yeah, it’s rigged,'" he continued, speaking ironically. "'Cause you don’t have a president who’s a change-maker – who, with a Congress who will work with him.'"

"But the president has done a better job than he has gotten credit for. And don't you forget it.”

Clinton’s remarks about Obama come after his wife appears to have embraced the president’s record on the campaign trail.

She positively referenced Obama 22 times at Thursday night’s Democratic primary debate and in recent stump speeches has positioned herself as the candidate who would continue his policies in office.

Hillary Clinton Hillary Diane Rodham ClintonHillicon Valley: FBI chief says Russia is trying to interfere in election to undermine Biden | Treasury Dept. sanctions Iranian government-backed hackers The Hill's Campaign Report: Arizona shifts towards Biden | Biden prepares for drive-in town hall | New Biden ad targets Latino voters FBI chief says Russia is trying to interfere in election to undermine Biden MORE has also attacked primary rival Bernie Sanders Bernie SandersMcConnell accuses Democrats of sowing division by 'downplaying progress' on election security The Hill's Campaign Report: Arizona shifts towards Biden | Biden prepares for drive-in town hall | New Biden ad targets Latino voters Why Democrats must confront extreme left wing incitement to violence MORE at the debate for his criticisms of Obama, pointing to a blurb he wrote praising a book that said the president “let progressives down.”

Sanders fired back that he has always supported the president’s vision for the country.

“One of us ran against Barack Obama Barack Hussein ObamaThe Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon Trump appointees stymie recommendations to boost minority voting: report Obama's first presidential memoir, 'A Promised Land,' set for November release MORE,” he said at the debate, referring to Clinton's contentious 2008 contest with Obama. “I was not that candidate.”

Correction: This story has been updated to reflect that former President Clinton was mocking President Obama ironically.