Us Senate 2025 Top 10. Get caught up on the most important polling for the most consequential races of 2025. — data for fivethirtyeight's previous favorability, presidential approval and national 2025 republican primary averages is available for download here.
— the 10 senate seats most likely to flip in 2025 by simone pathe, cnn 14 minute read updated 10:31 am edt, mon august 26, 2025 — data for fivethirtyeight’s previous favorability, presidential approval and national 2025 republican primary averages is available for download here.