Marco Rubio has been having a moment — the kind that makes people wonder if he might be a candidate for president sooner than later. On Tuesday, he took over press secretary duties while Karoline Leavitt was on maternity leave and fielded questions for more than 45 minutes, happily trading rap lyrics with reporters along the way. On Wednesday, his staff clipped one of his exchanges into a campaign-style video over soaring music. On Thursday, he met Pope Leo in the Vatican, exchanging gifts and kind words even though the president and vice president have feuded with the world’s most prominent religious leader. More broadly, his popularity among the MAGA faithful is rising , it seems, as President Donald Trump’s presumed successor, Vice President JD Vance, sees his fall (at least a bit ). The betting markets are suddenly bullish on Rubio as a potential 2028 nominee. Key takeaways Secretary of State Marco Rubio has been in the spotlight recently.…