Republicans have a 1 in 2 chance of holding the Senate in November, according to our prediction model. Follow along as we track the 2026 midterms https://www.economist.com/interactive/2026/us-midterms/prediction-model/senate?taid=69ee2d23a9d16e00016b6488&utm_campaign=trueanthem&utm_medium=social&utm_source=voante