Political Ideologies

Most Democratic States 2026

Senate Democrats

10
20
30
40
  • The Cook Partisan Voting Index is typically expressed with the lean and advantage combined, resulting in values such as R+13 (which indicates a 13-point Republican advantage) or D+7 (which indicates a 7-point Democratic advantage).
  • 2024 voter registration data unavailable for: Arkansas, Connecticut, and Missouri. Party affiliation not required for Alabama, Georgia, Hawaii, Illinois, Indiana, Michigan, Minnesota, Mississippi, Montana, North Dakota, Ohio, South Carolina, Tennessee, Texas, Vermont, Virginia, Washington, and Wisconsin.