Key swing states Results — The Blue Wall Collapse
| State | Trump % | Clinton % | Winner | Margin | Voted 2012 |
|---|---|---|---|---|---|
| PennsylvaniaFlipped R | 48.2% | 47.5% | Trump | +0.7pp | Obama D |
| MichiganFlipped R | 47.5% | 47.3% | Trump | +0.2pp | Obama D |
| WisconsinFlipped R | 47.2% | 46.5% | Trump | +0.7pp | Obama D |
| FloridaFlipped R | 49.0% | 47.8% | Trump | +1.2pp | Obama D |
| OhioFlipped R | 51.7% | 43.6% | Trump | +8.1pp | Obama D |
| North Carolina | 49.8% | 46.2% | Trump | +3.6pp | Romney R |
| Arizona | 48.7% | 45.1% | Trump | +3.6pp | Romney R |
| Minnesota | 44.9% | 46.4% | Clinton | −1.5pp | Obama D |
Pennsylvania, Michigan and Wisconsin had voted Democratic in every presidential election since 1988. All three flipped to Trump by margins under 1 percentage point.
What Decided 2016
Rust Belt Economics
The deindustrialization of the American Midwest created a large population of white working-class voters who felt economically abandoned by both parties. Trump's message — trade protectionism, bringing manufacturing back, anti-NAFTA, anti-TPP — resonated powerfully in counties that had seen factory closures and stagnant wages for decades. Clinton's campaign did not have a clear answer to this economic anxiety.
The Comey Letter
On October 28, 2016 — eleven days before the election — FBI Director James Comey wrote to Congress that the FBI had found new emails potentially relevant to the investigation of Clinton's private server. The letter reopened the email controversy at a critical moment and coincided with Clinton's polling lead shrinking from roughly 6 points to 3 in the final week. Most analysts believe it cost Clinton 1-3 points, enough to tip the razor-thin Rust Belt states.
White Working-Class Turnout
Trump dramatically overperformed among non-college white voters compared to Romney in 2012. In rural Wisconsin, Trump carried some counties by 40-50 point margins. White working-class voters who had either stayed home in 2012 or voted Obama in 2008 shifted massively to Trump. This coalition proved decisive in Pennsylvania, Michigan and Wisconsin.
Clinton's Wisconsin Absence
Notably, Clinton never campaigned in Wisconsin after the primary. Her campaign assumed the "Blue Wall" states were safe and concentrated resources elsewhere. Trump's campaign, sensing opportunity, visited Wisconsin repeatedly. This strategic miscalculation was among the most cited factors in her loss there by 22,748 votes.
Frequently Asked Questions
Did Hillary Clinton win the popular vote in 2016?
Yes. Clinton won the national popular vote by approximately 2.87 million votes (48.2% to 46.1%). However, she lost the Electoral College 232-306 to Trump. Her popular vote advantage was concentrated in California (+4.3 million) and New York (+1.7 million), which gave her no additional electoral votes under winner-takes-all rules. This made 2016 the fifth US presidential election where the Electoral College winner lost the popular vote.
By how little did Trump win Pennsylvania, Michigan and Wisconsin?
The margins were extraordinarily thin. Trump won Pennsylvania by 44,292 votes out of nearly 6 million cast (0.72%). He won Michigan by 10,704 votes out of nearly 5 million (0.23%). He won Wisconsin by 22,748 votes out of nearly 3 million (0.77%). Combined, these three states gave Trump 46 electoral votes — more than enough for his 306-232 victory. A shift of roughly 40,000 votes across these three states would have made Clinton president.
How did the 2016 result compare to predictions?
Most major forecasters gave Clinton a substantial edge: FiveThirtyEight gave Trump a 29% chance; the New York Times Upshot gave him 15%; Huffington Post gave him 2%. The result was a major shock to the polling industry and was attributed to undersampling of non-college-educated white voters and systematic polling errors in Midwestern states. It prompted major rethinking of polling methodology and Electoral College modeling.
The Campaign
Donald Trump announced his candidacy on June 16, 2015, descending an escalator at Trump Tower while describing Mexican immigrants as criminals and rapists. Virtually every political analyst dismissed the announcement as a publicity stunt. He led national Republican primary polls within weeks. He dispatched a field of 16 credentialed opponents — senators, governors, a former president’s son — through a combination of relentless media dominance, personal insults, and an anti-establishment message that resonated with Republican primary voters who had grown disenchanted with party leadership.
Hillary Clinton’s primary battle with Bernie Sanders was closer and more damaging than her campaign had expected. Sanders won 23 primaries, drove Clinton leftward on trade and healthcare, and exposed deep dissatisfaction with the Clinton brand among younger and more progressive Democrats. By the general election, some Sanders supporters refused to consolidate around Clinton; others backed third-party candidates Gary Johnson (3.3%) and Jill Stein (1.1%) in sufficient numbers to matter in close states.
The general election was defined by asymmetric scandals: Trump survived the Access Hollywood tape (“grab them by the p***y”) with his coalition intact. Clinton was unable to escape the email server investigation, which James Comey re-opened eleven days before the election. On election night, networks called Florida for Trump at 10:50 PM. North Carolina, Pennsylvania, Wisconsin and Michigan followed. By 2:30 AM, Clinton had called Trump to concede. The result shocked every major forecasting model.
Historical Significance
Polling’s Credibility Crisis
Trump’s victory was the most consequential polling failure since 1948. National polls showing Clinton +3 were roughly accurate; state-level polls in Pennsylvania, Michigan and Wisconsin systematically underestimated Trump by 4–6 points. The American Association for Public Opinion Research conducted an extensive post-election autopsy. Likely voter screening, non-response bias among non-college whites, and late-breaking voters toward Trump were identified as primary causes. The failure accelerated the broader crisis of trust in polling institutions that continues today.
Realignment of the Class Divide
2016 accelerated a realignment that had been building since 1980: Republicans winning non-college white voters by massive margins while Democrats made offsetting gains among college-educated whites and suburban professionals. For the first time, education — not income — became the primary predictor of partisanship. This sorting reshaped the electoral map: Sun Belt suburbs trended Democratic; Rust Belt small cities and rural areas trended heavily Republican. The realignment continued and deepened in 2018, 2020 and 2022.
Trumpism as a Permanent Force
Trump’s 2016 victory transformed the Republican base from a traditional conservative party into a vehicle for nationalist populism, trade protectionism and anti-institutional politics. After losing in 2020, Trump remained the dominant force in Republican politics, winning the 2024 primary and election in a rematch demonstrating his hold on the party. The 2016 election is the pivot point of contemporary American politics — everything since is best understood in reference to it.
2016 Presidential Election - Video Analysis
CBS News: New poll shows low Trump approval rating