Will President Trump be impeached before Jan 20, 2029?

Step 1: Temporal Grounding As of September 13, 2026, we are evaluating the probability of presidential impeachment before January 20, 2029 (27+ months remain). All research data is current and temporally consistent.

Step 2: Baseline and Historical Context Presidential impeachment is historically rare (<5% baseline). However, Trump is the only President impeached twice (2019, 2021), establishing unique precedent. The current political environment is extraordinary: 36% approval, ongoing Iran war crisis, 3.4% inflation with 27.4% gasoline price surge, and explicit Democratic impeachment intentions.

Step 3: Probabilistic Decomposition P(Impeachment before Jan 2029) = P(Democrats win House) × P(Impeachment | Democratic House) + P(Republicans hold House) × P(Impeachment | Republican House)

Democrats Win House Scenario (85% probability):

• Rep. Jamie Raskin explicitly stated Trump has "undoubtedly committed impeachable acts" (Sept 6, 2026)
• Democratic coalition since April 2026 has called for impeachment over Iran war and Emoluments Clause violations
• However, NOT all Democratic members may support third impeachment
• Moderate Democrats may resist, fearing political backlash or "impeachment fatigue"
• Timeline: House takeover in January 2027 leaves 24 months until deadline
• Estimated P(Impeachment | Democratic House) = 75-80%

Republicans Hold House Scenario (15% probability):

• Impeachment extremely unlikely with Republican majority
• Would require extraordinary bipartisan crisis
• Estimated P(Impeachment | Republican House) = 5%

Step 4: Calculate Weighted Probability Base calculation: 0.85 × 0.77 + 0.15 × 0.05 = 0.655 + 0.0075 = 0.663

Step 5: Adjustment Factors

Downward adjustments:

• Moderate Democratic resistance: Not all Democrats may support third impeachment. Nancy Pelosi historically resisted first impeachment until Ukraine scandal. Current Democratic caucus may include moderates from swing districts won in 2026 who fear constituent backlash. (-3%)
• Long timeline uncertainty (27 months): Substantial time for circumstances to change, public opinion shifts, or alternative political strategies. (-1%)
• Political fatigue: Third impeachment of same President may face diminishing returns and public exhaustion. (-0.5%)

Upward adjustments:

• Multiple alleged violations: Both Iran war decisions AND Emoluments Clause violations provide dual rationales (+1%)
• Economic pain amplifies: 3.4% inflation and 27.4% gasoline price increases directly hurt constituents, strengthening impeachment political case (+0.5%)

Net adjustment: -3% approximately

Step 6: Final Estimate 0.663 - 0.03 = 0.633, rounded to 0.62 for conservative calibration

Step 7: Market Comparison Market odds: 0.66 (66%) My estimate: 0.62 (62%) Difference: 4 percentage points

The market appears slightly overconfident. The 66% market odds may not fully account for:

1. Moderate Democratic resistance to third impeachment
2. Long timeline uncertainty (27 months)
3. Possibility that Democratic leadership uses other accountability tools instead

Step 8: Key Uncertainty The critical assumption is P(Impeachment | Democratic House) = 77%. If moderate Democrats resist more strongly than anticipated, this could drop to 60-65%, bringing overall probability to 51-55%. Conversely, if Iran crisis worsens or new scandals emerge, this could rise to 85-90%, bringing overall probability to 72-77%.

SMALL EDGE AGAINST MARKET: My estimate of 62% vs. market's 66% suggests the market is slightly overconfident by ~4 percentage points. The market appears to be mechanically translating the 85% Democratic House probability into impeachment probability without sufficiently discounting for: (1) moderate Democratic resistance to third impeachment, (2) long 27-month timeline uncertainty, and (3) alternative accountability strategies leadership may pursue. However, this edge is modest—within reasonable uncertainty bounds. The market's 66% is defensible and may prove correct if Democratic impeachment resolve is stronger than I estimate. This is a marginal edge, not a strong contrarian position. Given transaction costs and uncertainty, this might not represent actionable value unless you have strong conviction that moderate Democrats will resist more than the market expects.