What's next for this popular Republican governor after he leaves office?

And he's leaving office on a high note, with his approval ratings remaining firmly in positive territory.

So what's next for the 50-year-old Sununu, who eight years ago, when first elected, was the nation's youngest governor?

But Sununu reiterated what he told Fox News Digital in July.

"Definitely ruling out running for the Senate in 2026. Yeah, definitely not on my dance card," he said.

Sununu, one of the more recognizable governors nationwide thanks to his regular appearances the past few years on the Sunday talk shows and cable news networks, mulled a Republican presidential nomination run before announcing a year and a half ago that he wouldn't seek the White House in 2024.

But he didn't entirely shut the door, adding, "We'll see what political chapters write themselves down the road."

Sununu will be succeeded as New Hampshire governor by Gov.-elect Kelly Ayotte, a fellow Republican and former state attorney general and former U.S. senator.

The governor was a top surrogate on the campaign trail and on the airwaves for Ayotte, who pledged to continue the Sununu agenda.

Asked if Ayotte's nearly nine and half point win over former Manchester Mayor Joyce Craig, the Democratic Party gubernatorial nominee, was also a victory for him, Sununu said, "It was a victory for New Hampshire."

Asked if he'd be offering advice to his successor, Sununu said "she'll have my cell number. I don't know if she'll need it, because I think she's going to be fantastic on her own, but she'll always have my cell number."

Sununu pointed to John Lynch and now-Sen. Maggie Hassan, his Democratic predecessors as governor, who Sununu said shared their cellphone numbers with him. He noted, "We want New Hampshire to be successful. So, it's not just me helping Kelly out. It is always a team effort. She's going to have a host of people that she can lean on for any advice when she needs it."