Mark Kelly’s resume stands out in the sea of lawyers that dominate Washington.
The Arizona senator was a US navy pilot who served multiple deployments. He was on Celebrity Jeopardy. He is a steadfast partner to his wife, former US representative Gabrielle Giffords, who survived an assassination attempt at a public event in Tucson in 2011 and has worked alongside Kelly to limit guns since.
Oh, and he’s been to space multiple times because he was an astronaut, along with his twin brother, Scott. He even wrote a children’s book about it, called Mousetronaut.
“An astronaut! Who doesn’t like astronauts, except for Flat Earthers, right? But they’re very small in quantity,” Arizona pollster Mike Noble said. “So, outside of Flat Earthers, I’m trying to think of what’s more American than astronauts. Astronaut takes everybody. I’ve been to space, what have you done?”
Kelly is on Kamala Harris’s shortlist for vice-president, and his background certainly helps make his case.
He first ran for office in 2020, winning a special election against Republican Martha McSally to take a Senate seat. He won again in 2024 in the regular Senate election against Blake Masters, a well-funded Peter Thiel acolyte.
To win the Senate seat in a purple state, Kelly has struck a centrist tone and proven himself a prolific fundraiser. He hasn’t inspired the intra-party ire that Arizona’s other senator , now-independent Kyrsten Sinema, has. He polls at the top of Arizona politicians for favorability.
His presence on the presidential ticket could help Harris’s prospects in Arizona, where Trump is polling ahead, though the benefit of a VP pick may be greater in other swing states where she’s closer to Trump in the polls. Kelly could also help her improve how she’s viewed on immigration issues.
Harris is expected to choose a running mate in the coming days, then blitz through battleground states with them.
Kelly has a couple vulnerabilities, but the biggest drawback is what Democrats stand to lose – his Senate seat, in a swing state, at a time when the balance of the Senate is in contention.
Arizonans have endured a series of special elections, expensive and exhausting endeavors, for Senate seats since the late Senator John McCain’s death. Kelly’s vacancy would require another one, “giving the state a Senate election every even year from 2016 through 2030”, the Washington Examiner pointed out. The cycle has made Senate elections, with their longer six-year terms, more akin to congressional races, with their two-year terms. If Kelly becomes the vice-president, Arizona’s Democratic governor would appoint a Democratic successor, then a special election for the seat would be called in 2026.
If the state’s Republican party decides to end its lean into hard-right Maga politics, Republicans could win it back. Democrats face a widening gap in voter registration compared to Republicans and independents. But the current Senate race, in which Ruben Gallego, a Democrat, faces Trump favorite Kari Lake, shows Gallego with the lead – a sign that the Republican candidates often remain out of step with the broader electorate there.
Still, Democrats in Arizona are excited by the prospect of one of their own on a presidential ticket. The Arizona Democratic party’s executive board issued a letter formally endorsing Kelly as a VP, praising his work in the Senate and saying Kelly and Harris would “build a winning coalition” to beat Trump.
“The road to the White House runs through Arizona in this election,” the board’s letter said. “We are united behind Vice-President Kamala Harris and Senator Kelly because our democracy is on the line.”
Kelly hasn’t been as ubiquitous on TV or the campaign trail as the other Democratic contenders lately, and he’s not a bombastic debater ready to lob insults at the other side. He isn’t an attack dog like vice-presidents often can be. He isn’t as tested in the trenches – he hasn’t had to address much controversy or endure combative interviews, Noble said, but he has a great relationship with Harris.
Kelly has praised Harris on social media in recent days. In one video posted this week, he shows footage driving a Jeep through the Arizona desert juxtaposed with rockets flying into space.
“I’ve been on a lot of missions, but never once did I do it alone. I always had a really good team behind me, and that’s what @KamalaHarris, @RubenGallego, and Democrats are going to need to win in November,” he wrote.
After Biden stepped aside, Kelly said he “couldn’t be more confident that Vice President @KamalaHarris is the right person to defeat Donald Trump and lead our country into the future”, giving her his full support.
Kelly could use his proximity to the US-Mexico border to counter some of the right’s push to brand Harris as a “border czar”. In a TV appearance this week, he attacked Trump and Republicans over the demise of a bipartisan Senate border bill. That bill aligned more with Republicans than with Democrats, he said.
“On their side of the field, we realized, we’ve got to get operational control over the border. I realized this, Kamala Harris realizes this, and this legislation was going to do that,” he said on MSNBC’s Morning Joe. “And our goal here was to get this legislation passed and then start working on comprehensive immigration reform. But this was stopped dead in its tracks by Donald Trump because he wanted to have this as an election issue. Like a lot of other Republicans, they don’t actually want to solve this problem.”
If he’s chosen as running mate, some of his past liabilities could come back to haunt him. Perhaps the biggest line of attack he faced in his Senate races revolved around a space balloon company he co-founded and its ties to China. An odd turn slinging vitamins in China could come up, too.
The right is also likely to hit him on his record advocating for gun control alongside his wife and her group, Giffords. After the shooting of elementary school kids in Uvalde, Texas, he said, “it’s fucking nuts not to do anything about this”.
His personal story showcasing the toll of gun violence should eclipse this attack, Noble said. “That crosses party lines.”
Another liability was foreclosed this week after he said he was in favor of the Protecting the Right to Organize Act, a pro-union bill that he previously had not signed on to support.
It’s a “huge honor” to have an Arizona Democrat on the list for the presidential ticket, said Stacy Pearson, a Democratic consultant in Arizona. “We’ve tried many, many times at this point, with Barry Goldwater and John McCain. Maybe it’ll take a Democrat to get there.”
The last time an Arizona Democratic elected official ended up in a presidential administration – when Janet Napolitano left the governor’s office after she was tapped by Barack Obama to be Homeland security secretary – was more than 20 years ago.
After Napolitano’s exit, Republicans held the governor’s office until Katie Hobbs, a Democrat, won it back in 2022 – a sign of the potential difficulty in maintaining power if Kelly heads to DC.
“As much as they love to see Mark Kelly promoted to a position that important for our country, there is fear that the seat could be lost,” Pearson said.