Markets on Insight Prediction

With four weeks left until PredictIt’s scheduled execution by the CFTC on February 15th, we’re taking a look at the markets offered by one of its competitors, Insight Prediction. Excluding sports, as of January 19th there are 36 markets in five categories: Category Markets Current Events 10 Economics 4 Russia/Ukraine 6 US Politics 14 World […]

Markets on Insight Prediction Read More »

Comparing the different 538 models in U.S. Senate races

FiveThirtyEight’s model is actually three different official model versions built on top of each other with polling, fundamentals, and expert forecasts: Version Component(s) Lite Polling Classic Polling, Fundamentals Deluxe Polling, Fundamentals, Expert forecasts Polling: Polls are weighted based on their sample size, recency, and pollster rating.  (Pollsters are rated by methodology and past accuracy.)  In

Comparing the different 538 models in U.S. Senate races Read More »

Did Bookmakers & Prediction Markets fare that badly in the 2022 Senate races?

There has been some ridicule about prediction markets’ poor performance in the 2022 Senate elections, but the data for individual Senate races is less clear.  Below we look at the state-level forecasts for 2022 Senate races from the following sources: These 12 platforms are being compared in two different ways: Prices, probabilities, and odds were

Did Bookmakers & Prediction Markets fare that badly in the 2022 Senate races? Read More »

PredictIt prices: Warnock 2020 v. Warnock 2022

Senator Raphael Warnock’s two U.S. Senate races in Georgia were viewed very differently by PredictIt traders. In the 2020 U.S. Senate special election, all candidates ran in a “jungle primary” on the day of the General Election, with a runoff vote scheduled for January 5, 2021.  The price for Democratic “Yes” contracts in the Georgia

PredictIt prices: Warnock 2020 v. Warnock 2022 Read More »