{"source":"kalshi","id":"KXSENATEMAD-26","ticker":"KXSENATEMAD-26","slug":"KXSENATEMAD-26","title":"Massachusetts Democratic Senate nominee?","description":null,"image":null,"icon":null,"active":true,"closed":false,"start_date":"2025-07-02T16:00:00Z","end_date":"2026-11-03T15:00:00Z","closed_time":null,"volume":478631.14,"volume_24hr":3077.96,"volume_24h_change":null,"normalized_vol_24hr":23.264955520629883,"normalized_volume":47.29273986816406,"liquidity":null,"open_interest":331141.45,"categories":["Elections"],"tags":[],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Ed Markey","top_outcome_probability":0.84,"top_outcome_prob_24h_change":0.020000000000000018,"top_outcome_volume_24h_change":1461.58,"updated_at":"2026-08-17T11:09:28.326966Z","fetched_at":"2026-08-17T11:09:28.326966Z","added_at":null,"url":"https://kalshi.com/markets/kxsenatemad/massachusetts-democratic-senate-nominee/kxsenatemad-26","chart_24h":[5165.29,5153.23,4227.29,4177.26,3583.5,3763.06,3850.73,1340.1,1337.1,1223.31,1226.31,1170.64,1221.23,1221.23,1083.3700000000001,1056.3700000000001,1150.24,1951.18,1918.17,3146.46,3033.7400000000002,2888.23,2814.24,2931.96,3076.96],"markets":[{"source":"kalshi","id":"KXSENATEMAD-26-EMAR","event_id":"KXSENATEMAD-26","slug":"KXSENATEMAD-26-EMAR","question":"Will Ed Markey be the Democratic nominee for the Senate in Massachusetts?","group_item_title":"Ed Markey","description":"If Ed Markey wins the nomination for the Democratic Party to contest the Class II Massachusetts Senate seat in 2026, then the market resolves to Yes.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.84,0.16000000000000003],"probability":0.84,"spread":0.010000000000000009,"active":true,"closed":false,"start_date":"2025-07-02T16:00:00Z","end_date":"2026-11-03T15:00:00Z","closed_time":"2026-11-03T15:00:00Z","volume":232762.23,"volume_24hr":2615.54,"prob_24h_change":0.020000000000000018,"volume_24h_change":1461.58,"normalized_vol_24hr":24.182476043701172,"normalized_volume":47.54010009765625,"liquidity":null,"categories":["Elections"],"countries":["United States"],"updated_at":"2026-08-17T11:10:41.502512Z","fetched_at":"2026-08-17T11:09:28.431134Z","added_at":null,"url":"https://kalshi.com/markets/kxsenatemad/massachusetts-democratic-senate-nominee/kxsenatemad-26","event_title":"Massachusetts Democratic Senate nominee?","chart_24h":[0.82,0.82,0.84,0.84,0.84,0.84,0.84,0.84,0.84,0.84,0.84,0.84,0.84,0.84,0.84,0.84,0.84,0.83,0.83,0.83,0.83,0.85,0.85,0.85,0.85,0.85]},{"source":"kalshi","id":"KXSENATEMAD-26-SMOU","event_id":"KXSENATEMAD-26","slug":"KXSENATEMAD-26-SMOU","question":"Will Seth Moulton be the Democratic nominee for the Senate in Massachusetts?","group_item_title":"Seth Moulton","description":"If Seth Moulton wins the nomination for the Democratic Party to contest the Class II Massachusetts Senate seat in 2026, then the market resolves to Yes.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.16,0.84],"probability":0.16,"spread":0.010000000000000009,"active":true,"closed":false,"start_date":"2025-09-24T14:00:22Z","end_date":"2026-11-03T15:00:00Z","closed_time":"2026-11-03T15:00:00Z","volume":229253.14,"volume_24hr":462.42,"prob_24h_change":0.0,"volume_24h_change":-3548.91,"normalized_vol_24hr":14.714245796203613,"normalized_volume":47.42329788208008,"liquidity":null,"categories":["Elections"],"countries":["United States"],"updated_at":"2026-08-17T09:04:33.751703Z","fetched_at":"2026-08-17T09:02:53.910561Z","added_at":null,"url":"https://kalshi.com/markets/kxsenatemad/massachusetts-democratic-senate-nominee/kxsenatemad-26","event_title":"Massachusetts Democratic Senate nominee?","chart_24h":[0.16,0.16,0.16,0.16,0.17,0.17,0.17,0.17,0.17,0.17,0.17,0.17,0.17,0.17,0.17,0.17,0.17,0.17,0.17,0.16,0.16,0.16,0.16,0.16,0.16]},{"source":"kalshi","id":"KXSENATEMAD-26-APRE","event_id":"KXSENATEMAD-26","slug":"KXSENATEMAD-26-APRE","question":"Will Ayanna Pressley be the Democratic nominee for the Senate in Massachusetts?","group_item_title":"Ayanna Pressley","description":"If Ayanna Pressley wins the nomination for the Democratic Party to contest the Class II Massachusetts Senate seat in 2026, then the market resolves to Yes.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.01,0.99],"probability":0.01,"spread":0.001,"active":true,"closed":false,"start_date":"2025-09-27T14:00:40Z","end_date":"2026-11-03T15:00:00Z","closed_time":"2026-11-03T15:00:00Z","volume":12172.19,"volume_24hr":0.0,"prob_24h_change":0.0,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":27.54741668701172,"liquidity":null,"categories":["Elections"],"countries":["United States"],"updated_at":"2026-08-17T07:55:24.397598Z","fetched_at":"2026-08-15T00:26:38.827174Z","added_at":null,"url":"https://kalshi.com/markets/kxsenatemad/massachusetts-democratic-senate-nominee/kxsenatemad-26","event_title":"Massachusetts Democratic Senate nominee?","chart_24h":[0.01,0.01]},{"source":"kalshi","id":"KXSENATEMAD-26-ARIK","event_id":"KXSENATEMAD-26","slug":"KXSENATEMAD-26-ARIK","question":"Will Alexander Rikleen be the Democratic nominee for the Senate in Massachusetts?","group_item_title":"Alexander Rikleen","description":"If Alexander Rikleen wins the nomination for the Democratic Party to contest the Class II Massachusetts Senate seat in 2026, then the market resolves to Yes.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.01,0.99],"probability":0.01,"spread":0.001,"active":true,"closed":false,"start_date":"2025-07-02T16:00:00Z","end_date":"2026-11-03T15:00:00Z","closed_time":"2026-11-03T15:00:00Z","volume":4443.58,"volume_24hr":0.0,"prob_24h_change":0.0,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":21.96241569519043,"liquidity":null,"categories":["Elections"],"countries":["United States"],"updated_at":"2026-08-17T02:50:41.460488Z","fetched_at":"2026-08-17T02:50:41.460488Z","added_at":null,"url":"https://kalshi.com/markets/kxsenatemad/massachusetts-democratic-senate-nominee/kxsenatemad-26","event_title":"Massachusetts Democratic Senate nominee?","chart_24h":null}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/kalshi/KXSENATEMAD-26","as_of":"2026-08-17T11:17:25.335928Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"Massachusetts Democratic Senate nominee?\" — top market at 84% probability across 4 outcomes","source_url":null}}