PolymarketCheck availabilityNo KYC2% feeVerified resolution dataFairly calibratedData quality warningStale data
Data as of Sep 1, 2026, 6:30 PM UTC · policy pm-quality-3
Current implied probability
No 90.1%
Market quality
≤49 / 100
Low quality24h Volume
—
Liquidity
$15.3K
Medium liquidityBid / Ask
9.0% / 10.0%
Spread
1.0 pt
Tight spreadComments
2
7d Change
-1.0 pts
Market data
Updated 3 hours ago
StaleDec 22, 25, 7:00 PMJan 1, 27, 4:59 AM
Trends
Rules
This market will resolve to "Yes" if Donald Trump publicly endorses, or announces that he will vote for, JD Vance for the 2028 United States presidential election or the Republican primary for that election, by December 31, 2026, 11:59 PM ET.
- Otherwise this market will resolve to "No".
- If Donald Trump announces that he will vote for another candidate or endorses another candidate for the 2028 United States presidential election or the Republican primary for that election, this market will immediately resolve to "No".
- The resolution source for this market will be official information from Donald Trump or one of his representatives, or a consensus of credible reporting of Trump's endorsement.
Open markets
Politics
KALSHI2028 Democratic presidential nominee
- Alexandria Ocasio-Cortez-1.0pt16%
- Jon Ossoff-1.0pt16%
- Gavin Newsom+1.0pt14%
+45 more outcomes
- Total Vol
- $209.1M
- 24h Vol
- $1.1M
POLYMARKETPresidential Election Winner 2028
- JD Vance-0.3pt25%
- Alexandria Ocasio-Cortez11%
- Jon Ossoff11%
+49 more outcomes
- Total Vol
- $697.1M
POLYMARKETBrazil Presidential Election
- Luiz Inácio Lula da Silva56.6%
- Flávio Bolsonaro39.4%
- Renan Santos+0.3pt2%
+16 more outcomes
- Total Vol
KALSHIMassachusetts Democratic Senate nominee?
- Ed Markey+0.5pt99%
- Seth Moulton-0.9pt1%
- Ayanna Pressley0%
+1 more outcomes
- Total Vol
- $2.1M
POLYMARKETNext French Presidential Election
- Marine Le Pen-0.2pt33%
- Édouard Philippe+1.0pt27%
- Jean-Luc Mélenchon14%
+38 more outcomes
POLYMARKETBrazil Presidential Election First Round: 2nd Place
- Flávio Bolsonaro-0.5pt86%
- Luiz Inácio Lula da Silva+0.9pt13%
- Augusto Cury-0.1pt1%
+15 more outcomes
- Israel x Iran ceasefire continues through which date?
- Republican Presidential Nominee 2028
- Democratic Presidential Nominee 2028
- US announces end of Iranian blockade by which date?
- Which party will gain most seats in Russian Parliamentary Election?
- 2028 Republican presidential nominee
- 2028 U.S. Presidential Election winner?
- 2026 Midterms: House popular vote margin of victory? (Generic ballot)
- Balance of Power: 2026 Midterms
- Which party will win the U.S. House?
Frequently asked questions
- What are the current odds for Will Trump endorse JD Vance for president before 2027??
- Polymarket prices No at 90% as of September 1, 2026.
- When does Will Trump endorse JD Vance for president before 2027? resolve?
- Will Trump endorse JD Vance for president before 2027? is scheduled to resolve on January 1, 2027.
- How is Will Trump endorse JD Vance for president before 2027? settled?
- Polymarket settles this market as follows: This market will resolve to "Yes" if Donald Trump publicly endorses, or announces that he will vote for, JD Vance for the 2028 United States presidential election or the Republican primary for that election, by December 31, 2026, 11:59 PM ET.