Ten more House seats in reliably blue districts have been shifted in the GOP’s favor just one week ahead of Election Day, spelling trouble for Democrats in areas where President Joe Biden cruised to victory in 2020.
Two seats in New York and one in California have been moved from leaning Democratic to now being deemed toss-ups, giving Republicans hope for extra pickup opportunities as they seek to gain control of the House for the next two years. Additionally, a toss-up race in Oregon has been updated to lean Republican, according to the latest ratings from the nonpartisan Cook Political Report.
https://www.washingtonexaminer.com/news/campaigns/more-house-races-shift-in-gop-favor-------------
Seen this before, especially in '10, when races broke hard for the GOP in the last week or two. Trump's win in '16 is another.
That hard shift in momentum is difficult to catch in late polls. Joni Ernst here in IA the last week was polled barely above a tie in the last week of polling, but she won by 10.
Hoping that is what is going on here.