Progressive Democrat Rep. Ro Khanna co-chaired Sen. Bernie Sanders' 2020 presidential campaign.

When it comes to 2024, Khanna says he's 100% behind the effort to reelect President Biden.

"I do whatever the president tells me when it comes to 2024 and his team," Khanna said during a Fox News Digital interview. "I’m a foot soldier when it comes to making sure he gets reelected."

But that mission may pay dividends for Khanna in 2028, when 47-year-old politician from California may have national aspirations.

IT'S GETTING UGLY REAL FAST BETWEEN DEAN PHILLIPS AND BIDEN ALLIES

Ro Khanna and Vivek Ramaswamy debate in New Hampshire

Democrat Rep. Ro Khanna of California, left, and Republican presidential candidate Vivek Ramaswamy take part in a policy debate at the New Hampshire Institute of Politics on Nov. 1, 2023, in Manchester. (Fox News - Paul Steinhauser)

Khanna was interviewed after participating in a debate with Republican presidential candidate Vivek Ramaswamy on Wednesday. The cordial showdown over policy differences took place at the New Hampshire Institute of Politics, a must-stop in the traditional first-in-the-nation presidential primary state for current and potential future White House hopefuls.

Khanna has made multiple trips to New Hampshire over the past year and a half. And in May he headlined the McIntyre-Shaheen gala, which is the New Hampshire Democratic Party’s largest annual fundraiser. The visits have sparked speculation about a possible 2028 presidential run.

"We’ve got to first win 2024, and that’s what’s on my mind. But I love the state. It’s a state where you sneeze and the nation gets to hear you. And so, for me, it’s a way of getting my ideas out," Khanna said when asked about any 2028 ambitions.

BIDEN BACKERS LAUNCH WRITE-IN EFFORT FOR PRESIDENT IN KEY PRIMARY STATE

Longtime New Hampshire based Democrat consultant Jim Demers — a top Biden supporter in the Granite State — told Fox News that "Ro Khanna has been one of the best friends of New Hampshire Democrats for the past two years. Every time Democrats ask for help, he has stepped up."

"Whether or not he has plans to run for president in the future, I guess we’ll have to wait and see. But he’s making a lot of friends, and that is a very good way to get a leg up on anybody for 2028," Demers said.

Ro Khanna may have national ambitions in 2028

Democrat Rep. Ro Khanna of California speaks with voters at the New Hampshire Institute of Politics, Nov. 1, 2023, in Manchester. (Fox News - Paul Steinhauser)

And a veteran progressive activist and leader in New Hampshire, pointing to Khanna's support for the state, called him "the fifth member" of New Hampshire's all-Democrat four person congressional delegation.

"I think he’s a natural successor for Bernie’s supporters because he was co-chair of Bernie’s campaign. People know Ro. They like Ro. They’re happy to see Ro," said the activist, who asked to remain anonymous to speak more freely. "So, there is a little buzz going on."

BIDEN ALLY WARNS PRESIDENT MAY BE PUTTING KEY BATTLEGROUND STATE ‘AT RISK’ IN 2024

But Khanna says first things first.

The president nearly a year ago proposed a nominating calendar for the 2024 election cycle that booted New Hampshire from its traditional lead-off primary position and replaced it with South Carolina, a much more diverse state.

New Hampshire holds the first presidential primary

A sign outside the State House in Concord, New Hampshire, marks the state's cherished century-old, first-in-the-nation presidential primary status. (Fox News - Paul Steinhauser)

The Democratic National Committee (DNC) earlier this year overwhelmingly approved the calendar change proposed by the president. But New Hampshire is on course to leapfrog South Carolina as it honors a longtime state law that mandates the state holds the first primary.

CLICK HERE TO GET THE FOX NEWS APP

With the state on course to hold an unsanctioned Democrat contest, the president's reelection campaign last week announced that Biden wouldn't file to place his name on the New Hampshire ballot. On Monday, top Democrats in the state launched a write-in campaign for the president.

New Hampshire's also a crucial battleground state in the general election, and Khanna warned in a Fox Digital interview earlier this year that Biden's absence from the ballot "puts the general election in the state at risk."

On Wednesday, Khanna said that "a lot of folks like me — I was a co-chair of Bernie Sanders’ campaign — are going to be working hard for him in New Hampshire to have him win a write-in campaign."

Get the latest updates from the 2024 campaign trail, exclusive interviews and more at our Fox News Digital election hub.