Michael Katz holds a strong lead in the Delaware Republican Senate primary due to his decisive endorsement from the state party, secured by an 82% vote at the recent convention, alongside his prior service as a state senator and established name recognition in Delaware politics. John Shulli, an Army colonel and War College instructor, has mounted a challenge with notable fundraising and a profile focused on military service and state issues, yet trails significantly without comparable institutional support. The September 15 primary remains weeks away, leaving limited time for Shulli to close the gap amid low overall visibility for the contest in a state where Democrats hold the Senate seat. Trader consensus reflects these structural advantages for Katz while acknowledging the possibility of shifts from late campaigning or turnout patterns.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedDelaware Republican Senate Primary Winner
$34,484 Vol.
$34,484 Vol.

Michael Katz
89%

John Shulli
12%
$34,484 Vol.
$34,484 Vol.

Michael Katz
89%

John Shulli
12%
If no 2026 Delaware Republican Senate Primary takes place, this market will resolve to "Other".
The resolution source for this market will be the first announcement of the results from the Delaware Republican party, however an overwhelming consensus of credible reporting may suffice.
Market Opened: Feb 25, 2026, 6:16 PM ET
Resolver
0x69c47De9D...If no 2026 Delaware Republican Senate Primary takes place, this market will resolve to "Other".
The resolution source for this market will be the first announcement of the results from the Delaware Republican party, however an overwhelming consensus of credible reporting may suffice.
Resolver
0x69c47De9D...Michael Katz holds a strong lead in the Delaware Republican Senate primary due to his decisive endorsement from the state party, secured by an 82% vote at the recent convention, alongside his prior service as a state senator and established name recognition in Delaware politics. John Shulli, an Army colonel and War College instructor, has mounted a challenge with notable fundraising and a profile focused on military service and state issues, yet trails significantly without comparable institutional support. The September 15 primary remains weeks away, leaving limited time for Shulli to close the gap amid low overall visibility for the contest in a state where Democrats hold the Senate seat. Trader consensus reflects these structural advantages for Katz while acknowledging the possibility of shifts from late campaigning or turnout patterns.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



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