Critical elections are pivotal elections (like 1860, 1932, and 1968) in which large blocs of voters and entire regions durably switch party loyalties, producing a realignment that reshapes the party coalitions and the regional map of American politics for decades.
A critical election is not just a big win. It is an election where the underlying coalitions that make up each party crack apart and re-form, and the new alignment sticks around for a generation or more. Think of it as the moment the political map gets redrawn rather than just recolored for one cycle.
The "regional alignments" half of the term matters because these shifts usually show up geographically. In 1932, FDR's win built the New Deal coalition (the urban North, organized labor, the Solid South, and, increasingly, Black voters) that kept Democrats dominant for decades. Starting in the 1960s, that coalition unraveled as the South gradually realigned toward the Republican Party, flipping a century-old regional pattern. On the AP Gov exam, critical elections are one of the main answers to the question "how and why do political parties change and adapt?" Parties don't just tweak their platforms randomly; they respond to these seismic shifts in who votes for them and where.
This term lives in Unit 5 (Political Participation), specifically the material on how and why political parties change and adapt over time. The CED expects you to explain that parties modify their policies and messaging to appeal to changing demographics and coalitions, and critical elections are the dramatic version of that process. They also connect backward to Unit 5's coverage of linkage institutions: parties only work as a link between people and government if their coalitions actually reflect voters, and critical elections are when that link gets rebuilt. Understanding 1860, 1932, and 1968 gives you concrete evidence for arguments about party change, voter behavior, and why today's red-blue regional map looks the way it does.
Keep studying AP Gov Unit 5
Party Realignment (Unit 5)
These two terms are a cause-and-effect pair. The critical election is the event, and realignment is the outcome, the durable shift in which groups belong to which party. If an FRQ asks about realignment, a critical election like 1932 is your go-to evidence.
New Deal Coalition (Unit 5)
The 1932 election is the textbook critical election precisely because it built this coalition. Urban workers, the South, union members, and eventually Black voters fused into a Democratic majority that lasted into the 1960s. It's the clearest example of a regional alignment forming.
Divided Government (Units 2 & 5)
When old alignments decay without a clean new critical election to replace them, you get split-ticket voting and divided government. Some scholars call this dealignment, and it helps explain why no election since 1968 fits the critical election mold neatly.
Candidate-Centered Campaigns (Unit 5)
As campaigns shifted from party machines to individual candidates with their own fundraising and media operations, party loyalty weakened. That's one reason modern shifts happen gradually (a "rolling realignment" in the South) instead of in one dramatic critical election.
Expect this concept in multiple-choice questions about why political parties change, often paired with a map, a table of regional voting data, or a description of a coalition shifting between parties. A classic stem describes the South voting solidly Democratic in 1944 and solidly Republican by 1984, then asks what concept explains the change. The answer is realignment driven by critical elections. No released FRQ has used this exact phrase verbatim, but the Argument Essay and Concept Application questions regularly reward it as evidence for claims about how parties adapt to changing demographics. Know the big three examples cold: 1860 (Lincoln, slavery, birth of the Republican majority), 1932 (FDR, the Depression, the New Deal coalition), and 1968 (Nixon, the start of the Southern realignment toward the GOP).
A landslide is about margin; a critical election is about durability. Nixon won 49 states in 1972 and Reagan won 49 in 1984, but neither permanently rebuilt party coalitions, so they aren't critical elections. Meanwhile 1932 counts not because FDR won big, but because the voters who switched stayed switched for decades. On the exam, look for evidence of a lasting shift in group or regional loyalty, not just a blowout score.
A critical election is one where voter coalitions shift in a lasting way, triggering a realignment that defines party politics for decades afterward.
The three standard AP examples are 1860 (Lincoln and the rise of the Republicans), 1932 (FDR and the New Deal coalition), and 1968 (the beginning of the South's realignment toward the GOP).
Regional alignments are the geographic fingerprint of realignment, like the Solid South voting Democratic from the Civil War era until it flipped Republican after the 1960s.
Critical elections are the CED's prime example of how and why political parties change and adapt to shifting demographics and coalitions.
A landslide victory alone is not a critical election; the test is whether the new coalition pattern endures across multiple election cycles.
Weakening party loyalty and candidate-centered campaigns help explain why recent realignment has been gradual rather than concentrated in one dramatic election.
A critical election is one where major voter blocs and regions durably switch party loyalties, producing a realignment of party coalitions. The classic examples are 1860, 1932, and 1968.
No. Landslides like 1972 and 1984 were huge wins that didn't permanently change party coalitions. A critical election requires a lasting shift in who votes for each party, like 1932 building the New Deal coalition.
A critical election is the event; realignment is the result. The election of 1932 was the critical election, and the decades of Democratic dominance through the New Deal coalition were the realignment it produced.
The Solid South had voted Democratic since the Civil War era, but after Democrats embraced civil rights legislation in the 1960s, Southern white voters gradually realigned toward the Republican Party, starting with the 1968 election. It's the AP's main example of a regional realignment.
Yes, it's the most-cited example. The Great Depression drove urban workers, union members, the South, and increasingly Black voters into FDR's New Deal coalition, which kept Democrats dominant in national politics for roughly three decades.
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