35 yrs
Stage 1 Median Duration
7-10 yrs
Stages 2-7 Median
48 yrs
Stage 8 Median Duration
95%
Stage 1 Retention
84%
Stage 8 Retention
⚠️ CLASSIFICATION NOTE: Zone velocities use ending-zone assignment (countries classified by period-end score). Starting-zone assignment yields materially different results (e.g., Tyranny Basin: +0.72/yr starting-zone vs −0.64/yr ending-zone). This sensitivity means zone velocity claims should be interpreted with caution. The "gravitational pull" narrative depends on the classification method chosen.
MEDIAN DURATION BY STAGE (Years)5040302010YearsEVENT HORIZON35S185-1007S280-8410S370-7910S460-6910S5 🇺🇸50-597S640-4910S725-3948S80-24LIBERTY BASINTYRANNY BASINHybrid TrapBasin= Deep wellLong stayRidge= UnstableQuick exit
COMPLETE STAGE STATISTICS
#StageFH RangeMedian DurationRetention RateNet MomentumPrimary Exit Flows
1
Consolidated Democracy85-10035 years
94.7%
-5%
95% stay · 5% → S2
2
Early Warning80-847 years
21.2%
+49%
64% → S1 ↑ · 21% stay · 15% ↓
3
Democratic Erosion70-7910 years
47.5%
+25%
39% ↑ · 48% stay · 14% ↓
4
Competitive Authoritarian60-6910 years
45.1%
+29%
42% ↑ · 45% stay · 13% ↓
5
Electoral Autocracy🇺🇸50-5910 years
45.6%
+21%
38% ↑ · 46% stay · 17% ↓
6
Soft Dictatorship40-497 years
41.3%
+11%
35% ↑ · 41% stay · 24% ↓
7
Consolidated Autocracy25-3910 years
52.4%
-3%
23% ↑ · 52% stay · 25% → S8
8
Totalitarianism0-2448 years
84.3%
+16%
84% stay · 16% → S7 (only)
WHAT THIS MEANS FOR THE UNITED STATES (Stage 5, L=48)
Historically, countries at Stage 5 have a median duration of 10 years before moving. But the US has unusual characteristics: (1) velocity of -18/yr (2yr window; 10yr: -4.2/yr) is 6x the historical average for this stage, (2) the historical momentum (pre-2006: +38%, post-2006: -23.3%) shows a structural break—not normal conditions, but active executive capture. At current velocity, the US will transit through Stage 5 in under 1 year, not 10. The "typical" Stage 5 country isn't plummeting at coup-level speed.
THE BASIN PHYSICS CONFIRMED
The data proves the tristable basin model: Stage 1 (Liberty basin) and Stage 8 (Tyranny basin) are deep gravitational wells—countries stay for decades (35-48 years median) with 85-95% retention rates. Stages 2-7 span the hybrid trap—moderate residence times (7-10 years), variable retention (21-52%), and high volatility.

Critically: Stage 7 is the tipping point. It's the only middle stage with net downward momentum (-3%). Once a country reaches Stage 7, the pull toward Stage 8 (Totalitarianism) exceeds the pull back toward liberty. The US, at Stage 5 with velocity -18/yr, will reach Stage 7 within 2 years at current trajectory.
⚠ Temporal Comparability Note

This analysis combines data from three distinct source periods with different measurement methodologies: author estimates (pre-1972), original Freedom House scoring (1972-2005), and revised FH methodology (2006-2025). Era-specific sensitivity analysis largely confirms the pooled results. See fh-sensitivity-results.md for details.