Former Vice President Joe Biden Joe BidenBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Democratic groups using Bloomberg money to launch M in Spanish language ads in Florida Harris faces pivotal moment with Supreme Court battle MORE introduced himself as “Jill Biden’s husband” at a Monday event kicking off his presidential campaign in Pittsburgh.

"My name is Joe Biden, and I'm Jill Biden's husband," Biden said. “That’s how I’m known back home, that’s how I’m known most places.”

"My name is Joe Biden, and I'm Jill Biden's husband," Joe Biden says at his campaign kick off in Pittsburgh, PA. https://t.co/quSzjNpeYq pic.twitter.com/z6LLQYKoJt — This Week (@ThisWeekABC) April 29, 2019

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During her eight years as second lady, Jill Biden, who holds a doctorate in educational leadership, taught full-time at Northern Virginia Community College. She made educational initiatives in general and community colleges in particular a key aspect of her advocacy as second lady, calling community colleges one of the nation’s “best-kept secrets.”

She also collaborated with then-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 on the Joining Forces initiative, aimed at encouraging Americans to support military families. Joe and Jill Biden have been married since 1977.

The former vice president, who officially announced a presidential bid last week, has led most polls of the crowded Democratic field, usually followed by Sen. Bernie Sanders Bernie SandersOutrage erupts over Breonna Taylor grand jury ruling Dimon: Wealth tax 'almost impossible to do' Grand jury charges no officers in Breonna Taylor death MORE (I-Vt.).