1. He’s been a governor, a senator and a national party chair

Kaine has held three big-time political positions: Governor of Virginia from 2006 to 2010, DNC chair from 2009 to 2011 and U.S. senator from 2013 to today.

And his political rise has been a methodical one, going from city council (1995-98) to mayor of Richmond (1998-2001) to lieutenant governor (2002-06) to governor. Prior to entering politics, he was a clerk in the U.S. Court of Appeals for the 11th Circuit and then a lecturer at the University of Richmond law school.

2. He was a Christian missionary and speaks Spanish

In the 1980s, he took a break from his studies at Harvard Law School to spend time as a Christian missionary in Honduras. While there, he taught carpentry and welding.

And in part thanks to his time in Honduras, Kaine is a fluent Spanish speaker. After winning his Senate seat in 2012, he became the first U.S. senator to deliver a speech from the Senate floor in Spanish.

3. His eyebrow is/was a meme

Kaine’s first big moment on the national stage was his Democratic response to George W. Bush’s 2006 State of the Union address.

The appearance was perhaps best-remembered for this fresh-faced governor’s constantly arching left eyebrow. It became a meme.

4. He’s known as a nice guy’s nice guy

The headline of a recent Washington Post story about Kaine’s potential VP prospects is titled, “What’s a nice guy like Sen. Tim Kaine doing in a campaign like this?”

And Kaine’s amiable style has served him well. His approval rating in polls has generally been significantly higher than his disapproval rating, and he was elected senator in 2012 by a six-point margin over Republican George Allen – a fellow former governor and former senator who was trying to reclaim his seat.

But Kaine’s nice-guy demeanor has also raised questions about whether he would be able to play the traditional role of a running mate: attack dog.

5. He hasn’t always been a Hillary backer

In fact, he was one of Barack Obama’s earliest endorsers in the 2008 campaign, offering his support as early as February 2007.

Never one to wait around, his endorsement of Hillary Clinton in the 2016 campaign also came very early – in May 2014.

6. He was said to be favored by Bill Clinton

As the New York Times’ Amy Chozick and Jonathan Martin reported on Wednesday:

As Hillary Clinton prepares to make her choice for a vice-presidential candidate, Bill Clinton has privately expressed his support for Senator Tim Kaine of Virginia, according to three Democrats briefed on the conversations with the former president this week.

7. He married into a political family

His wife, Anne Holton, is the daughter of former Virginia Gov. A. Linwood Holton Jr. Holton, who met Kaine at Harvard, is the second daughter of a Virginia governor to later become the first lady of a Virginia governor. The first was Thomas Jefferson’s daughter, Martina Jefferson Randolph.

Anne Holton is a former juvenile court judge who currently serves as the Virginia secretary of education, a position she was appointed to by Democratic Gov. Terry McAuliffe in 2014.

8. He is a Catholic – and personally pro-life

But from a public policy standpoint, he has a pro-choice record.

9. He’s musical

He likes jazz, sings and plays the harmonica.

His band is called the Jugbusters

10. He’s no Bernie Sanders or Elizabeth Warren

Kaine launched his career in what was then a red state, and he’s crafted a relatively moderate persona. He’s certainly not the kind of pick that will get liberals excited in the way that Elizabeth Warren or Bernie Sanders – or even Sen. Sherrod Brown, D-Ohio, – would have.