Trump's endorsements continue to shape Republican primaries and general election prospects ahead of the 2026 midterms, as traders monitor Truth Social announcements for signals on Senate and House races. The president has issued hundreds of endorsements favoring incumbents and America First candidates, emphasizing border security, tax cuts, deregulation, energy dominance, and Second Amendment protections, with primary success rates exceeding 95 percent in recent cycles. Recent developments include endorsements for Alabama Senate candidate Barry Moore, multiple House incumbents in that state, and Florida nominees ahead of November voting. Late or withheld support in competitive contests, along with any shifts in high-profile races like those in Texas or Kentucky, remains a key variable for market probabilities.