Presidential approval rating is a measure of public support for a sitting U.S. president, typically derived from national polls and reported as a percentage who approve or disapprove of that president’s job performance. When people ask about the worst approval rating in history, they usually refer to the lowest net approval or the single poll with the smallest positive rating recorded for an American president through modern polling. This explanation focuses on verified poll data, methodological context, and the presidencies most frequently associated with historically low job-approval scores, while clarifying what the metric can and cannot show.
How Approval Ratings Are Measured
Approval ratings are produced by survey organizations that use standardized methods, random and representative samples, and transparent margin-of-error estimates. Differences in methodology, sample frame, question wording, and timing can produce meaningful variation between polls. Reputable pollsters follow consistent protocols, disclose methodology, and allow comparisons across time. When evaluating historic lows, it is important to consider whether a number comes from a single poll, a rolling average, or a trend line, and whether it reflects immediate reaction to an event or sustained public sentiment.
Top Candidates for Lowest Approval Ratings
Several presidencies are commonly cited when discussing historically low approval ratings, each associated with major crises or sustained unpopularity. The most frequently referenced periods include the final years of presidencies marked by war, economic strain, or institutional crisis. Listed below are verified examples of low approval ratings, the context in which they were recorded, and the type of poll (single reading versus sustained averages).
| President / Period | Metric | Verified Detail | Source Type |
|---|---|---|---|
| Richard Nixon, 1974 | Lowest single Gallup approval | 24% approve, July 1974 (Gallup) | Polling aggregator / Gallup |
| Harry S. Truman, 1950–1951 | Lowest sustained averages | 22–23% in multiple polls (Gallup) | Polling archive / Gallup |
| George W. Bush, 2008 | Lowest post-9/11 rating | 22% approve, Gallup, November 2008 | Polling archive / Gallup |
| Donald Trump, 2021 | Lowest post-inaugural rating for first term | 34% approve, Gallup January 2021 | Polling archive / Gallup |
Richard Nixon (1974)
In July 1974, amid the Watergate scandal and before his resignation, Richard Nixon recorded a 24% approval rating in Gallup polling, the lowest single approval figure captured in modern polling for a sitting president. This low reflected sustained distrust in government, intense media coverage, and uncertainty about the presidency’s stability. Although subsequent presidents would record comparable or slightly lower averages in certain polls, Nixon’s 24% remains the benchmark for a single poll measurement of presidential approval.
Harry S. Truman (1950–1951)
Harry S. Truman faced persistent unpopularity during the Korean War, inflation, and labor disputes, producing sustained approval averages in the low- to mid-20s across multiple polls in 1950 and early 1951. Several polls in that period show readings near 22–23%, making Truman’s presidency one of the most consistently unpopular in measured history. While no single poll for Truman is as frequently cited as Nixon’s 24%, the breadth of low readings across months makes his period a key reference for sustained disapproval.
Other Notable Low Periods
- George W. Bush, November 2008: 22% approval as the financial crisis persisted.
- Donald Trump, early 2021: 34% in the immediate post-inaugural period, reflecting polarized assessments of his term.
Limitations of Approval Ratings as Historical Judgment
Approval ratings reflect how people evaluate a president at a point in time and are influenced by news cycles, economic conditions, foreign crises, and measurement effects. They do not capture institutional achievements, long-term policy consequences, or contextual constraints such as divided government or global shocks. Moreover, polling frequency and methodology have changed over time, which can affect comparability across eras. Historical assessments of presidential performance typically combine approval metrics with policy outcomes, leadership evaluations, and retrospective judgments that polls only partially reflect.
Key Factors Behind Historic Low Ratings
Presidents who reach historic lows in approval often do so while managing severe challenges, including prolonged wars, deep recessions, or institutional crises. Public trust, media environment, and partisan polarization all shape how low a rating can fall and how long it persists. For example, Truman operated in an era before widespread survey research, yet contemporaneous polls recorded severe unpopularity during the Korean conflict. Nixon’s rating collapsed in the context of a constitutional crisis with few modern parallels. Understanding these periods helps explain why certain numbers recur in discussions of historic presidential unpopularity.
Modern Polling Context and Comparisons
Contemporary polling environments differ from those of the mid-20th century in frequency, transparency, and methodology; this makes direct numeric comparisons sensitive to measurement choices. Aggregators and trend lines reduce some volatility, but single polls—especially those taken during acute crises—can set the popular memory of a presidency’s unpopularity. When evaluating claims about historic lows, it is important to check the date of the poll, the sample size, the field period, the sponsor, and whether the number represents a one-off reading or a durable trend.
Conclusion
Based on verified poll data, Richard Nixon’s 24% approval rating in July 1974 is most frequently cited as the single lowest recorded in modern U.S. presidential polling, while Harry S. Truman’s sustained averages in the low 20s represent one of the most persistently low periods. These numbers reflect real public discontent tied to specific crises, and they remain useful reference points when discussing the scope of presidential unpopularity. Approvals are one lens among many—policy outcomes, institutional constraints, and historical reassessment also shape how presidencies are ultimately judged.