The site is giving an overall 64% chance of Republicans taking control of Congress, and 87% chance of them winning the House, indicating Democrats could be in for a rude shock. According to the site, the tightest Senate races will be in the states of Arizona (Democrats having a 51% chance of winning), Georgia (Republicans having a 52% chance of winning), and Pennsylvania (Republicans edging out with a 63% chance of winning).
Source: https://www.coindesk.com/policy/2022/10/27/crypto-predictions-site-polymarket-foresees-republicans-winning-both-senate-and-house/?utm_medium=referral&utm_source=rss&utm_campaign=headlines