Trader consensus in the Delaware Republican U.S. Senate primary favors John Shulli at 56.5% over Michael Katz at 38%, driven by Shulli's credentials as an Army colonel, Delaware native, and early filer on February 19, positioning him as the establishment choice to challenge incumbent Democrat Chris Coons. Katz, a former Democratic state senator who ran as an independent in 2024, filed later on March 19 amid skepticism from some GOP circles questioning his party switch and loyalty. No public polls exist, and no major developments have emerged in the past 30 days beyond candidate filings and initial campaign launches. The September 15 primary remains distant, with the state Republican convention potentially delivering key endorsements to sway odds.