The Inauguration Honeymoon: Approval Rating Mechanics in the First 100 Days
By Edward Halstead , February 5, 2025
Topic: Approval Rating
The Question
President Trump's initial approval rating in the Gallup tracking poll registered at 47%, the lowest inauguration-day approval for any president since Gallup began measuring in 1953. The question is not whether this number is good or bad, those are value judgments masquerading as analysis, but what structural factors determine a president's opening number and how it relates to subsequent trajectory.
WHAT HAPPENED
- Trump inauguration approval: 47% (Gallup, January 20–22, 2025)
- Historical comparison: Obama 67% (2009), Bush 57% (2001), Clinton 58% (1993), Trump 45% (2017)
- Partisan gap: 91% approval among Republicans, 5% among Democrats, 41% among independents
- The 86-point partisan gap is the largest ever recorded at inauguration
THE PICTURE IN OUR HEADS
The media narrative treated 47% as a "low" approval rating, which is true relative to historical inaugurations but misleading as a predictor. The relevant question is not the absolute number but the structural composition of the number and the direction it is likely to move.
THE MACHINERY
Inaugural approval ratings are composed of three components: partisan base support, opposition courtesy (the traditional post-inauguration rally effect), and independent assessment. The Trump 2025 number reflects near-total base consolidation (91%), near-total opposition rejection (5%), and a moderate independent rating (41%).
The 5% Democratic approval eliminates the rally effect entirely. In previous inaugurations, opposition-party approval typically started at 30–40% and declined to its baseline over 6–12 months. This created the "honeymoon" pattern: high initial approval gradually declining. Trump's 2025 number skips the honeymoon because there is no opposition courtesy to decay. The 47% is not a starting point for decline. It is approximately the equilibrium.
This has a structural implication: if the starting point is the equilibrium, the approval rating is unlikely to decline significantly absent a major negative event, and unlikely to increase significantly absent a major positive one. The number is stuck not because of any specific policy but because the partisan composition of the electorate has sorted completely.
THE COMPETING FRAMES
The "low approval" frame compares Trump to historical norms and finds him wanting. The "structural equilibrium" frame notes that in an electorate where party identification determines approval at 90%+ rates, the president's approval is simply a weighted average of partisan composition. The electorate is roughly 30% Republican, 28% Democratic, and 42% independent. At 91/5/41, the weighted average is 45–48%, which is exactly where the number sits.
POLLERBULL SIGNAL
- What moves odds: First-100-day approval trends are weakly predictive of midterm outcomes. The relevant metric is approval in September of the midterm year, not January of the inaugural year. The correlation between inaugural approval and midterm seat loss is 0.31 (weak).
- What would falsify this: If Trump's approval moves above 52% or below 40% within the first six months without a clear precipitating event, the structural equilibrium model is wrong and the electorate is more fluid than assumed.