The Delaware Republican Party's recent endorsement of former state senator Michael Katz at its state convention has positioned him as the frontrunner for the September 15 U.S. Senate primary nomination. Katz, who switched from the Democratic Party after serving in the state legislature, received overwhelming backing from delegates and also holds the Independent Party of Delaware nod. Challenger John Shulli, a retired colonel and U.S. Army War College instructor with deep Delaware roots, remains competitive through targeted fundraising and appeals to voters seeking fresh leadership. Trader consensus reflects these dynamics in a still-contested race, where party infrastructure and candidate backgrounds will likely shape turnout and final results before the primary.