WASHINGTON — Every now and then, while talking to officials in the Oval Office, with friends over dinner, or on the patio at Mar-a-Lago, President Donald Trump pauses and muses aloud about a subject quietly captivating the Republican Party. What do you think? JD or Marco? According to multiple people close to the president, Trump asks advisers who they prefer, before frequently musing that he should just have Vice President JD Vance and Secretary of State Marco Rubio run together on the same presidential ticket in 2028. Trump’s advisers say he is simply having fun polling people, and that 2028 is not at the top of his mind at all. Still, it would be hard for Trump to ignore that lately, the two men he refers to as “kids” are taking on bigger profiles as the midterm elections approach. Last week, Rubio appeared in the White House briefing room, affably fielding questions on the Iran war — which his team later produced into a campaign-worthy video.…