Former first lady Michelle Obama Michelle LeVaughn Robinson ObamaBlack stars reimagine 'Friends' to get out the vote Obama shares phone number to find out how Americans are planning to vote Michelle Obama: 'Don't listen to people who will say that somehow voting is rigged' MORE wouldn't comment during remarks on Saturday on the clash between Democratic White House hopefuls Joe Biden Joe BidenPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Fox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio MORE and Sen. Kamala Harris Kamala HarrisHundreds of lawyers from nation's oldest African American sorority join effort to fight voter suppression Biden picks up endorsement from progressive climate group 350 Action 3 reasons why Biden is misreading the politics of court packing MORE (Calif.) and stayed silent on backing one the two dozen candidates seeking the party's nomination.

When asked by moderator Gayle King Gayle KingFauci: Lack of masks at Trump rallies frustrating The Hill's Morning Report - Presented by Facebook - Trump, GOP senators at odds over next stimulus bill Minneapolis police union says members have been 'scapegoated by political leaders' MORE at an Essence Festival on Saturday if she had a comment on the "dust up" between Harris and Biden, Obama simply replied "I do not."

"I've been doing this rodeo far too long, and no comments," she said, according to a video shared by ABC News.

Biden came under fire after Harris attacked his record on busing during the first Democratic debate.

Obama on Saturday also did not endorse any candidate. ADVERTISEMENT

"Barack and I are going to support whoever wins the primary, our primary focus is letting the primary process play out," she said.

Obama added that it's too early to predict who will become the party nominee.

"It's like trying to figure out who's going to win the World Series on the first seven games, that's where we are right now. It's so early and things will change," she said.

Obama said she and the former president are watching, supportive and offering advice to candidates who seek it.

When King asked Obama to share what qualities she believed a president should have, she shot back: "I talked about this in the last campaign but nobody listened."

"I was like, 'It's a hard job y’all.' Let's be clear, this isn't a joke. It's not a game," she said.

"The leader of the free world with a tweet can start war, can crush an economy, can change the future of our children," Obama added. "It is a real job that requires deep seriousness and focus, somebody who has to have enough understanding of history so that you don't repeat what hasn't worked."