{
 "slug": "ma-08-house-margin-of-victory-2026",
 "title": "MA-08 House Election Margin of Victory",
 "url": "https://polymarkettrader.com/odds/ma-08-house-margin-of-victory-2026/",
 "polymarket_url": "https://polymarket.com/event/ma-08-house-margin-of-victory-2026",
 "category": "politics",
 "closed": false,
 "updated": "2026-11-07T00:50:00+00:00",
 "end_date": "2026-11-04T04:59:00+00:00",
 "volume": 25280.1,
 "volume_24h": 21.42,
 "liquidity": 50531.51,
 "outcomes": [
  {
   "name": "Democrat 40-45%",
   "probability": 0.9645,
   "change_24h": 0.2745,
   "volume": 6921.46,
   "closed": false
  },
  {
   "name": "Democrat 25-30%",
   "probability": 0.016,
   "change_24h": -0.059,
   "volume": 1158.43,
   "closed": false
  },
  {
   "name": "Democrat 50-55%",
   "probability": 0.0155,
   "change_24h": -0.001,
   "volume": 7260.35,
   "closed": false
  },
  {
   "name": "Democrat 55%+",
   "probability": 0.015,
   "change_24h": -0.013,
   "volume": 1206.93,
   "closed": false
  },
  {
   "name": "Democrat 0-15%",
   "probability": 0.0145,
   "change_24h": -0.0095,
   "volume": 1158.09,
   "closed": false
  },
  {
   "name": "Democrat 35-40%",
   "probability": 0.013,
   "change_24h": -0.014,
   "volume": 472.68,
   "closed": false
  },
  {
   "name": "Democrat 30-35%",
   "probability": 0.0085,
   "change_24h": -0.0225,
   "volume": 370.62,
   "closed": false
  },
  {
   "name": "Democrat 15-25%",
   "probability": 0.0075,
   "change_24h": -0.0085,
   "volume": 454.86,
   "closed": false
  },
  {
   "name": "Democrat 45-50%",
   "probability": 0.005,
   "change_24h": -0.021,
   "volume": 5842.1,
   "closed": false
  },
  {
   "name": "Republican Wins",
   "probability": 0.0035,
   "change_24h": -0.0025,
   "volume": 434.59,
   "closed": false
  }
 ],
 "history": {
  "Democrat 40-45%": [
   [
    1791374420,
    0.295
   ],
   [
    1791417621,
    0.295
   ],
   [
    1791460830,
    0.295
   ],
   [
    1791504020,
    0.295
   ],
   [
    1791547220,
    0.295
   ],
   [
    1791590419,
    0.295
   ],
   [
    1791633622,
    0.435
   ],
   [
    1791676822,
    0.405
   ],
   [
    1791720022,
    0.42
   ],
   [
    1791763233,
    0.44
   ],
   [
    1791806418,
    0.445
   ],
   [
    1791849624,
    0.385
   ],
   [
    1791892820,
    0.38
   ],
   [
    1791936022,
    0.38
   ],
   [
    1791979232,
    0.38
   ],
   [
    1792022436,
    0.38
   ],
   [
    1792065620,
    0.38
   ],
   [
    1792108821,
    0.38
   ],
   [
    1792152021,
    0.37
   ],
   [
    1792195226,
    0.37
   ],
   [
    1792238420,
    0.37
   ],
   [
    1792281647,
    0.36
   ],
   [
    1792324834,
    0.365
   ],
   [
    1792368019,
    0.34
   ],
   [
    1792411218,
    0.365
   ],
   [
    1792454419,
    0.365
   ],
   [
    1792497620,
    0.32
   ],
   [
    1792540820,
    0.355
   ],
   [
    1792584020,
    0.335
   ],
   [
    1792670420,
    0.315
   ],
   [
    1792713636,
    0.325
   ],
   [
    1792756825,
    0.325
   ],
   [
    1792800036,
    0.315
   ],
   [
    1792929619,
    0.315
   ],
   [
    1792972855,
    0.215
   ],
   [
    1793016019,
    0.115
   ],
   [
    1793059241,
    0.05
   ],
   [
    1793102429,
    0.145
   ],
   [
    1793145620,
    0.21
   ],
   [
    1793188831,
    0.205
   ],
   [
    1793275218,
    0.2
   ],
   [
    1793318419,
    0.15
   ],
   [
    1793361630,
    0.1
   ],
   [
    1793404836,
    0.125
   ],
   [
    1793448024,
    0.13
   ],
   [
    1793491229,
    0.135
   ],
   [
    1793534416,
    0.13
   ],
   [
    1793577615,
    0.215
   ],
   [
    1793620815,
    0.165
   ],
   [
    1793664017,
    0.26
   ],
   [
    1793707231,
    0.235
   ],
   [
    1793750418,
    0.43
   ],
   [
    1793793618,
    0.465
   ],
   [
    1793836830,
    0.59
   ],
   [
    1793880017,
    0.71
   ],
   [
    1793923219,
    0.605
   ],
   [
    1793966417,
    0.69
   ],
   [
    1794009619,
    0.9645
   ],
   [
    1794016463,
    0.9645
   ]
  ],
  "Democrat 25-30%": [
   [
    1791374452,
    0.0665
   ],
   [
    1791417651,
    0.0515
   ],
   [
    1791504054,
    0.058
   ],
   [
    1791547255,
    0.035
   ],
   [
    1791590431,
    0.036
   ],
   [
    1791633637,
    0.034
   ],
   [
    1791676839,
    0.027
   ],
   [
    1791720039,
    0.0285
   ],
   [
    1791763248,
    0.0225
   ],
   [
    1791806435,
    0.0225
   ],
   [
    1791849642,
    0.015
   ],
   [
    1791892840,
    0.0545
   ],
   [
    1791936041,
    0.051
   ],
   [
    1791979252,
    0.0595
   ],
   [
    1792022458,
    0.063
   ],
   [
    1792065645,
    0.056
   ],
   [
    1792108843,
    0.056
   ],
   [
    1792152045,
    0.0875
   ],
   [
    1792195250,
    0.0915
   ],
   [
    1792238446,
    0.092
   ],
   [
    1792324858,
    0.0975
   ],
   [
    1792368042,
    0.111
   ],
   [
    1792411242,
    0.0385
   ],
   [
    1792454443,
    0.1085
   ],
   [
    1792497646,
    0.0445
   ],
   [
    1792540847,
    0.124
   ],
   [
    1792584047,
    0.1185
   ],
   [
    1792670447,
    0.093
   ],
   [
    1792756846,
    0.1045
   ],
   [
    1792800056,
    0.093
   ],
   [
    1792886402,
    0.087
   ],
   [
    1792929643,
    0.089
   ],
   [
    1793016035,
    0.017
   ],
   [
    1793102456,
    0.0165
   ],
   [
    1793145645,
    0.012
   ],
   [
    1793275247,
    0.0295
   ],
   [
    1793318448,
    0.0255
   ],
   [
    1793448056,
    0.0265
   ],
   [
    1793491258,
    0.027
   ],
   [
    1793534445,
    0.029
   ],
   [
    1793577643,
    0.0465
   ],
   [
    1793620844,
    0.0395
   ],
   [
    1793664036,
    0.038
   ],
   [
    1793707252,
    0.166
   ],
   [
    1793750440,
    0.032
   ],
   [
    1793793642,
    0.0965
   ],
   [
    1793836852,
    0.0395
   ],
   [
    1793880042,
    0.097
   ],
   [
    1793923243,
    0.027
   ],
   [
    1793966443,
    0.0765
   ],
   [
    1794009643,
    0.016
   ],
   [
    1794016466,
    0.016
   ]
  ],
  "Democrat 50-55%": [
   [
    1791374444,
    0.195
   ],
   [
    1791417644,
    0.2
   ],
   [
    1791460855,
    0.185
   ],
   [
    1791504046,
    0.2
   ],
   [
    1791547247,
    0.18
   ],
   [
    1791590429,
    0.15
   ],
   [
    1791633634,
    0.17
   ],
   [
    1791676835,
    0.18
   ],
   [
    1791720035,
    0.18
   ],
   [
    1791763245,
    0.17
   ],
   [
    1791806432,
    0.16
   ],
   [
    1791849638,
    0.175
   ],
   [
    1791892835,
    0.175
   ],
   [
    1791936037,
    0.17
   ],
   [
    1791979248,
    0.18
   ],
   [
    1792022453,
    0.18
   ],
   [
    1792065639,
    0.18
   ],
   [
    1792108838,
    0.17
   ],
   [
    1792152040,
    0.195
   ],
   [
    1792195245,
    0.195
   ],
   [
    1792238440,
    0.19
   ],
   [
    1792324853,
    0.185
   ],
   [
    1792368037,
    0.19
   ],
   [
    1792411237,
    0.185
   ],
   [
    1792454437,
    0.19
   ],
   [
    1792497640,
    0.23
   ],
   [
    1792540841,
    0.235
   ],
   [
    1792584041,
    0.255
   ],
   [
    1792670441,
    0.23
   ],
   [
    1792713656,
    0.23
   ],
   [
    1792756841,
    0.23
   ],
   [
    1792800051,
    0.225
   ],
   [
    1792929637,
    0.22
   ],
   [
    1793016031,
    0.195
   ],
   [
    1793059256,
    0.2
   ],
   [
    1793102449,
    0.3
   ],
   [
    1793145639,
    0.405
   ],
   [
    1793188853,
    0.305
   ],
   [
    1793275240,
    0.4
   ],
   [
    1793318441,
    0.3
   ],
   [
    1793361653,
    0.3
   ],
   [
    1793404859,
    0.305
   ],
   [
    1793448048,
    0.3
   ],
   [
    1793491251,
    0.25
   ],
   [
    1793534438,
    0.295
   ],
   [
    1793577637,
    0.285
   ],
   [
    1793620837,
    0.295
   ],
   [
    1793664031,
    0.385
   ],
   [
    1793707247,
    0.255
   ],
   [
    1793750435,
    0.245
   ],
   [
    1793793636,
    0.445
   ],
   [
    1793836847,
    0.014
   ],
   [
    1793880036,
    0.035
   ],
   [
    1793923237,
    0.0165
   ],
   [
    1793966437,
    0.0165
   ],
   [
    1794009637,
    0.011
   ],
   [
    1794016465,
    0.0135
   ]
  ]
 },
 "license": "CC BY 4.0",
 "license_url": "https://creativecommons.org/licenses/by/4.0/",
 "attribution": {
  "required": true,
  "text": "Odds data: PolymarketTrader.com",
  "url": "https://polymarkettrader.com/odds/ma-08-house-margin-of-victory-2026/",
  "html": "<a href=\"https://polymarkettrader.com/odds/ma-08-house-margin-of-victory-2026/\">Odds data: PolymarketTrader.com</a>"
 },
 "source": "Polymarket public Gamma and CLOB APIs; not affiliated with Polymarket."
}