Vivek Ramaswamy, entrepreneur and 2024 Republican primary candidate, has signaled interest in another presidential run. In the 2024 primary cycle, he competed in Iowa, eventually finishing fourth before suspending his campaign and endorsing Donald Trump. As discussions about 2028 candidate positioning begin, prediction markets are pricing his chances of winning the Republican presidential nomination at 1%, reflecting strong market consensus that other candidates are far more likely to emerge as the GOP nominee. The current price implies that traders assign minimal probability to a Ramaswamy nomination victory, though the long timeframe to 2028 and fluid political environment leave room for conviction shifts. The nomination battle will formally conclude at the 2028 Republican National Convention, where delegates will select the nominee. This market resolves based on the official GOP nominee announced at that convention, with the binary outcome determined by whether Ramaswamy secures that designation. Early market action has favored established party figures and recent primary candidates.