This is part of a recurring Washington Examiner series ranking the Senate seats most likely to flip in the 2026 midterm elections. The rankings will be updated as the political landscape shifts, with new editions planned for Oct. 1 and one week before Election Day.Democrats are leaving no stone unturned in their quest to flip four Senate seats and, with it, take back control of the upper chamber from Republicans.But with the GOP’s 53-47 majority, anything short of a four-seat net gain for Democrats will still mean a slim Republican majority or even a Biden-era split Senate scenario, with Vice...