Top Us Senate Races 2025. While 34 senate seats are up for election, control of the chamber is likely to be decided by the outcomes in nine of the most competitive races. Democrats and those who caucus with them currently sit in seven of the nine most competitive seats, including the montana senate seat, which is rated as lean republican.

Live 2025 senate election results and maps by state. When the dates of tracking polls from the same pollster overlap, only the most recent version is shown.