Vice President JD Vance is ramping up his political presence, endorsing Republicans up and down the midterm ballot and raking in millions as finance chairman of the Republican National Committee.

Vance’s increased political activity comes as the vice president is seen as a likely front-runner for the 2028 presidential nomination, along with Secretary of State Marco Rubio. Unlike Vance, Rubio is not raising money or campaigning for elected officials, something that political experts say could give the vice president a head start.