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Ohio Democratic Senate Primary Winner

icon for Ohio Democratic Senate Primary Winner

Ohio Democratic Senate Primary Winner

Sherrod Brown 99.0%

Greg Landsman <1%

Tim Ryan <1%

Allison Russo <1%

Polymarket

$19,827 Vol.

Sherrod Brown 99.0%

Greg Landsman <1%

Tim Ryan <1%

Allison Russo <1%

Polymarket

$19,827 Vol.

Sherrod Brown

$6,634 Vol.

99%

Greg Landsman

$9,367 Vol.

1%

Tim Ryan

$1,764 Vol.

<1%

Allison Russo

$2,063 Vol.

<1%

This market will resolve according to the winner of the Democratic Primary for United States Senator from Ohio. 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.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.

This market will resolve according to the winner of the Democratic Primary for United States Senator from Ohio.

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.
Volume
$19,827
End Date
May 5, 2026
Market Opened
Dec 2, 2025, 3:41 PM ET
This market will resolve according to the winner of the Democratic Primary for United States Senator from Ohio. 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.
This market will resolve according to the winner of the Democratic Primary for United States Senator from Ohio. 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.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.

This market will resolve according to the winner of the Democratic Primary for United States Senator from Ohio.

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.
Volume
$19,827
End Date
May 5, 2026
Market Opened
Dec 2, 2025, 3:41 PM ET
This market will resolve according to the winner of the Democratic Primary for United States Senator from Ohio. 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.

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Frequently Asked Questions

"Ohio Democratic Senate Primary Winner" is a prediction market on Polymarket with 4 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "Sherrod Brown" at 99%, followed by "Greg Landsman" at 1%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 99¢ implies that the market collectively assigns a 99% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "Ohio Democratic Senate Primary Winner" has generated $19.8K in total trading volume since the market launched on Dec 2, 2025. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "Ohio Democratic Senate Primary Winner," browse the 4 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Ohio Democratic Senate Primary Winner" is "Sherrod Brown" at 99%, meaning the market assigns a 99% chance to that outcome. The next closest outcome is "Greg Landsman" at 1%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Ohio Democratic Senate Primary Winner" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.