Sherrod Brown's 99% implied probability as the Ohio Democratic U.S. Senate primary winner on May 5 reflects his stature as a former three-term senator with unmatched name recognition, superior fundraising—raising over $12 million in Q1 2026 filings released mid-April—and the absence of competitive challengers in this special election primary to fill JD Vance's vacancy following his vice presidential election. Rep. Greg Landsman trails at 0.7%, with former Rep. Tim Ryan and state Rep. Allison Russo at 0.1% each, signaling trader consensus on Brown's dominance amid no recent polls, endorsements, or campaign developments elevating rivals. Though exceeding 90%, scenarios like a late scandal, health event, or surprise dropout could shift odds before early voting concludes.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedSherrod Brown 99.0%
Greg Landsman <1%
Tim Ryan <1%
Allison Russo <1%
$19,827 Vol.
$19,827 Vol.
Sherrod Brown
99%
Greg Landsman
1%
Tim Ryan
<1%
Allison Russo
<1%
Sherrod Brown 99.0%
Greg Landsman <1%
Tim Ryan <1%
Allison Russo <1%
$19,827 Vol.
$19,827 Vol.
Sherrod Brown
99%
Greg Landsman
1%
Tim Ryan
<1%
Allison Russo
<1%
If no 2026 Ohio Democratic 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 Ohio Democratic party, however an overwhelming consensus of credible reporting may suffice.
Market Opened: Dec 2, 2025, 3:41 PM ET
Resolver
0x2F5e3684c...If no 2026 Ohio Democratic 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 Ohio Democratic party, however an overwhelming consensus of credible reporting may suffice.
Resolver
0x2F5e3684c...Sherrod Brown's 99% implied probability as the Ohio Democratic U.S. Senate primary winner on May 5 reflects his stature as a former three-term senator with unmatched name recognition, superior fundraising—raising over $12 million in Q1 2026 filings released mid-April—and the absence of competitive challengers in this special election primary to fill JD Vance's vacancy following his vice presidential election. Rep. Greg Landsman trails at 0.7%, with former Rep. Tim Ryan and state Rep. Allison Russo at 0.1% each, signaling trader consensus on Brown's dominance amid no recent polls, endorsements, or campaign developments elevating rivals. Though exceeding 90%, scenarios like a late scandal, health event, or surprise dropout could shift odds before early voting concludes.
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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