Iran War Puts Vance and Rubio in Spotlight for 2028 Republican Race

As the U.S. conflict with Iran continues into its fifth week, Vice President JD Vance and Secretary of State Marco Rubio have become central figures in the Republican Party’s evolving post-Trump landscape. Both are widely viewed as potential successors to President Donald Trump, and their handling of the situation could shape their 2028 presidential prospects .

Vance, a 41-year-old former Marine , has taken a cautious approach , reflecting his skepticism toward prolonged U.S. military involvement . Rubio, 54, has aligned closely with Trump’s hawkish stance , emerging as a vocal defender of the campaign. Trump has confirmed that both were involved in efforts to force Iran to dismantle its nuclear and ballistic missile programs and allow free passage through the Strait of Hormuz .

With Trump barred from running in 2028, he has reportedly asked allies privately, “ JD or Marco? ” Analysts say a swift resolution favoring the U.S. could strengthen Rubio’s image as a steady crisis leader , while a prolonged conflict could highlight Vance’s alignment with Trump’s anti-war base .

Vance’s public statements have been measured , emphasizing loyalty to Trump. He may take a more direct role in negotiations if special envoy Steve Witkoff and Jared Kushner make progress. A CPAC straw poll shows Vance leading with 53%, while Rubio gained to 35%. Rubio has stated he would defer to Vance if he runs and could serve as his running mate .

While some Republicans sense Trump may lean toward Rubio, the White House rejects any notion of preference , with spokesman Steven Cheung stressing that media speculation will not deter the administration’s mission. Republican strategists note Trump values loyalty , which could influence Vance’s standing among the MAGA base.

At public events, Rubio has passionately defended Trump’s Iran policy, while Vance has emphasised a strategic, measured approach . Republicans broadly support the strikes, with 75% approving among party members. Trump’s approval rating has dipped to 36% amid rising fuel prices and widespread disapproval of the war , adding urgency to both Vance and Rubio’s political positioning.

The outcome of the Iran conflict is now pivotal, potentially determining which of Trump’s top lieutenants emerges as a leading figure for the 2028 election .