OddsDrift (bot)
Automated tracker of prediction-market odds: the biggest 24h swings, upsets at settlement, a daily midterms board, and a weekly calibration scorecard. Data from the public Kalshi and Polymarket APIs. Not affiliated. Not investment advice.
odds-drift.comMidterms 2026 odds board · 19 days to Election Day Senate (D): K 61¢ (-1) · P 64¢ (+0) House (D): K 90¢ (+0) · P 90¢ (+0) TX Sen (D): K 64¢ (+0) · P 62¢ (-2) MI Sen (D): K 68¢ (+0) · P 70¢ (+0) OH Sen (D): K 59¢ (-1) · P 62¢ (+0) #Midterms2026 #PredictionMarkets
Midterms 2026 odds board · 20 days to Election Day Senate (D): K 62¢ (+1) · P 64¢ (+0) House (D): K 90¢ (+0) · P 90¢ (+0) TX Sen (D): K 64¢ (+0) · P 64¢ (+2) MI Sen (D): K 68¢ (+0) · P 70¢ (+0) OH Sen (D): K 60¢ (+0) · P 62¢ (+0) #Midterms2026 #PredictionMarkets
Settled in the last 24h UPSET · K · Will the VoteHub 2026 generic bal… → YES · was 5¢ ~24h before · $16k UPSET · K · Will the maximum temperature be 7… → YES · was 15¢ ~24h before · $32k Upsets (≤15¢ or ≥85¢ the day before) in 30 days: 239 #PredictionMarkets #Kalshi #Polymarket
Calibration scorecard, week 41 Resolved: 1839 K, 387 P Priced ≥90¢ the day before: 270/276 resolved YES Priced ≤10¢: 27/975 resolved YES Weekly Brier: K 0.094 · P 0.106 (running K 0.118 · P 0.091) odds-drift.com/calibration #PredictionMarkets
Midterms 2026 odds board · 23 days to Election Day Senate (D): K 61¢ (+0) · P 62¢ (+0) House (D): K 90¢ (+0) · P 90¢ (+0) TX Sen (D): K 63¢ (+1) · P 64¢ (+4) MI Sen (D): K 66¢ (+0) · P 70¢ (+2) OH Sen (D): K 60¢ (-2) · P 62¢ (+0) #Midterms2026 #PredictionMarkets
Midterms 2026 odds board · 24 days to Election Day Senate (D): K 61¢ (-1) · P 62¢ (-2) House (D): K 90¢ (+0) · P 90¢ (+0) TX Sen (D): K 62¢ (-3) · P 60¢ (-4) MI Sen (D): K 66¢ (-3) · P 68¢ (-4) OH Sen (D): K 62¢ (+0) · P 62¢ (+0) #Midterms2026 #PredictionMarkets
Midterms 2026 odds board · 25 days to Election Day Senate (D): K 62¢ (-2) · P 64¢ (+0) House (D): K 90¢ (+0) · P 90¢ (-2) TX Sen (D): K 65¢ (-2) · P 64¢ (-2) MI Sen (D): K 69¢ (-2) · P 72¢ (+0) OH Sen (D): K 62¢ (+0) · P 62¢ (+0) #Midterms2026 #PredictionMarkets
Midterms 2026 odds board · 26 days to Election Day Senate (D): K 64¢ (-1) · P 64¢ (+0) House (D): K 90¢ (-2) · P 92¢ (+0) TX Sen (D): K 67¢ (+1) · P 66¢ (+2) MI Sen (D): K 71¢ (-3) · P 72¢ (-2) OH Sen (D): K 62¢ (-1) · P 62¢ (+0) #Midterms2026 #PredictionMarkets
Midterms 2026 odds board · 27 days to Election Day Senate (D): K 65¢ (+1) · P 64¢ (-2) House (D): K 92¢ (+0) · P 92¢ TX Sen (D): K 66¢ (-1) · P 64¢ MI Sen (D): K 74¢ (+0) · P 74¢ OH Sen (D): K 63¢ (-2) · P 62¢ GA Sen (D): K 96¢ (+0) · P 96¢ (-1) #Midterms2026 #PredictionMarkets
Settled in the last 24h UPSET · K · Will the maximum temperature be 8… → YES · was 11¢ ~24h before · $21k P · Will Geraldo Alckmin win the 2026… → NO · was 0¢ ~24h before · $724k Upsets (≤15¢ or ≥85¢ the day before) in 30 days: 233 #PredictionMarkets #Kalshi #Polymarket
Midterms 2026 odds board · 28 days to Election Day Senate (D): K 65¢ (+2) · P 66¢ (+0) House (D): K 92¢ (+0) · P 92¢ (-2) TX Sen (D): K 65¢ (+1) · P 64¢ (+0) MI Sen (D): K 74¢ (+3) · P 74¢ (+0) OH Sen (D): K 64¢ (-1) · P 62¢ (+0) #Midterms2026 #PredictionMarkets
Calibration scorecard, week 40 Resolved: 2041 K, 385 P Priced ≥90¢ the day before: 316/327 resolved YES Priced ≤10¢: 27/1033 resolved YES Weekly Brier: K 0.103 · P 0.055 (running K 0.121 · P 0.088) odds-drift.com/calibration #PredictionMarkets
Midterms 2026 odds board · 30 days to Election Day Senate (D): K 65¢ (+2) · P 64¢ (+0) House (D): K 92¢ (+0) · P 94¢ (+2) TX Sen (D): K 65¢ (+1) · P 64¢ (+2) MI Sen (D): K 72¢ (+1) · P 72¢ (+0) OH Sen (D): K 61¢ (+0) · P 60¢ (+0) #Midterms2026 #PredictionMarkets
Midterms 2026 odds board · 31 days to Election Day Senate (D): K 63¢ (+0) · P 64¢ (+2) House (D): K 92¢ (+0) · P 92¢ (+0) TX Sen (D): K 64¢ (+0) · P 62¢ (+0) MI Sen (D): K 71¢ (-2) · P 72¢ (+0) OH Sen (D): K 61¢ (+1) · P 60¢ (+2) #Midterms2026 #PredictionMarkets
Midterms 2026 odds board · 32 days to Election Day Senate (D): K 63¢ (+1) · P 62¢ (+0) House (D): K 92¢ (+1) · P 92¢ (+0) TX Sen (D): K 64¢ (+2) · P 62¢ (+0) MI Sen (D): K 73¢ (+0) · P 72¢ (+0) OH Sen (D): K 60¢ (+0) · P 58¢ (-2) #Midterms2026 #PredictionMarkets
Midterms 2026 odds board · 33 days to Election Day Senate (D): K 62¢ (-1) · P 62¢ (+0) House (D): K 91¢ (-1) · P 92¢ (+0) TX Sen (D): K 62¢ (+2) · P 62¢ (+0) MI Sen (D): K 73¢ (+0) · P 72¢ (+0) OH Sen (D): K 60¢ (+0) · P 60¢ (-2) #Midterms2026 #PredictionMarkets
Midterms 2026 odds board · 34 days to Election Day Senate (D): K 63¢ (+2) · P 62¢ (+0) House (D): K 92¢ (+0) · P 92¢ (+0) TX Sen (D): K 60¢ (+0) · P 62¢ (+2) MI Sen (D): K 73¢ (+1) · P 72¢ (+2) OH Sen (D): K 60¢ (+1) · P 62¢ (+5) #Midterms2026 #PredictionMarkets
Settled in the last 24h UPSET · P · Will MrBeast Gaming's next video… → YES · was 3¢ ~24h before · $14k UPSET · K · Will the maximum temperature be >… → YES · was 9¢ ~24h before · $23k Upsets (≤15¢ or ≥85¢ the day before) in 30 days: 238 #PredictionMarkets #Kalshi #Polymarket
Midterms 2026 odds board · 35 days to Election Day Senate (D): K 61¢ (-1) · P 62¢ (+0) House (D): K 92¢ (+0) · P 92¢ (+0) TX Sen (D): K 60¢ (-1) · P 60¢ (+0) MI Sen (D): K 72¢ (+0) · P 70¢ (+0) OH Sen (D): K 59¢ (+2) · P 57¢ (+0) #Midterms2026 #PredictionMarkets
Calibration scorecard, week 39 Resolved: 1552 K, 395 P Priced ≥90¢ the day before: 284/290 resolved YES Priced ≤10¢: 16/659 resolved YES Weekly Brier: K 0.120 · P 0.089 (running K 0.125 · P 0.095) odds-drift.com/calibration #PredictionMarkets
