Senate Progressive Left
15 members clustered on panel issue scores from roll-call votes — k-means on legislator positions across eight shared topics.
Faction #5What makes this faction distinct
Issue factions are clustered so members share similar panel issue profiles from roll-call votes. The charts below show which issues separate this group from every other faction in Congress.
vs. strongest contrast faction
Compared to House Main Street Republican — the faction furthest away on average across shared panel issues.
Senate Progressive Left
- Climate & environment: 85
- Economy & labor: 82
- Immigration: 81
House Main Street Republican
- Immigration: 6
- Climate & environment: 10
- LGBTQ+ rights: 15
Defining issue leans
Bar length = faction lean. Δ = how far this faction sits from all others on that issue.
All factions at a glance
Solid cells = defining issues for that faction (largest gap vs all others). Blue = progressive lean, red = traditionalist. Blank = issue not in that faction's top profile.
Biggest contrast pair: Senate Progressive Left vs House Main Street Republican
Map — zoomed to this faction
526 members in 9 issue factions (silhouette 0.54), clustered on combined vote + sponsorship dimension profiles. Compare with All factions →
Members
Senate Progressive Left
Defining panel issues
- Climate & environment — mean 85 (100% coverage)
- Economy & labor — mean 82 (100% coverage)
- Immigration — mean 81 (100% coverage)
| Member | State | Chamber |
|---|---|---|
| Jeff Merkley | OR | Senate |
| Mazie K. Hirono | HI | Senate |
| Edward J. Markey | MA | Senate |
| Christopher Murphy | CT | Senate |
| Adam B. Schiff | CA | Senate |
| Chris Van Hollen | MD | Senate |
| Peter Welch | VT | Senate |
| Ron Wyden | OR | Senate |
| Tammy Duckworth | IL | Senate |
| Elizabeth Warren | MA | Senate |
| Cory A. Booker | NJ | Senate |
| Lisa Blunt Rochester | DE | Senate |
| Alex Padilla | CA | Senate |
| Raphael G. Warnock | GA | Senate |
| Angela D. Alsobrooks | MD | Senate |