A wave of 2028 speculation is already rolling through Washington, with elected officials in both parties weighing their next moves and hinting at presidential ambitions as they juggle reelection plans, party dynamics and personal events.

Sen. Cory Booker is among those acknowledging that the next presidential cycle is already on his mind. He said Sunday on NBC’s “Meet the Press” that “I am definitely not ruling it out,” while emphasizing that his immediate priority is his Senate reelection campaign.

Mr. Booker also pointed to the personal side of the moment, noting that he and his wife, Alexis, whom he married in December, are “excited about whatever challenges we may take on as a couple.”

Mr. Booker ran for president in 2020, ending his campaign before the Iowa caucuses. His comments place him among likely Democratic 2028 contenders, including Govs. Gavin Newsom of California, J.B. Pritzker of Illinois and Josh Shapiro of Pennsylvania; former Vice President Kamala Harris; and former Transportation Secretary Pete Buttigieg.

On the Republican side, Sen. Rand Paul is flirting with another White House run, putting his odds at even money.

“We’re thinking about it, and I would say 50-50,” the Kentucky Republican said on CBS’ “Sunday Morning.” “We will make a decision after the election.”

Mr. Paul is framing his interest around a desire to see the GOP move in a more libertarian direction on issues such as spending, civil liberties, and foreign policy.

“There used to really be a free market/Libertarian wing of the party, and now there’s not much left,” he said. “In fact, on many days, it’s me in the Senate, the only one left for free trade.”

Mr. Paul ran for president in 2016, exiting the race after a fifth‑place finish in the Iowa caucuses.

Vice President J.D. Vance is considered an early favorite to win the GOP nomination. He finished first this weekend in the Conservative Political Action Conference’s presidential straw poll, securing 53% of the more than 1,600 votes cast.