Party dealignment is the trend in which a growing share of voters abandons long-standing party loyalty, shown by more self-identified independents and more split-ticket voting, which weakens parties' control over nominations, mobilization, and campaigns.
Party dealignment is what happens when voters don't switch parties, they just stop being loyal to any party at all. Since the 1960s, a growing share of the electorate identifies as independent, splits their ticket (voting for different parties for different offices on the same ballot), and skips the old habit of straight-ticket voting.
Why did this happen? Candidate-centered campaigns and modern media made parties less necessary. A candidate with TV ads, direct fundraising, and now social media can reach voters directly instead of relying on the party machine. The result is that parties lose some of their grip on candidate recruitment, voter mobilization, and campaign management, the exact functions the CED says parties perform. Elections become less predictable because fewer voters can be counted on as reliable partisans.
Party dealignment lives in Topic 5.3 (Political Parties) in Unit 5: Political Participation. It connects directly to two learning objectives. Under AP Gov 5.3.A, parties are one of the four linkage institutions (parties, interest groups, elections, media) that connect citizens to government. Dealignment means one of those channels is getting weaker, and voters increasingly rely on the others, especially media. Under AP Gov 5.3.B, you need to explain how parties function through mobilization, platforms, candidate recruitment, and campaign management. Dealignment is the trend that undercuts every one of those functions. When fewer voters feel attached to a party, the party's platform persuades fewer people and its get-out-the-vote machinery moves fewer of them. It's the 'why parties are adapting' half of the political parties story.
Keep studying AP® Gov Unit 5
Linkage Institutions (Unit 5)
Parties are one of four linkage institutions, and dealignment is essentially that channel fraying. As party loyalty fades, media and interest groups pick up more of the job of connecting voters to candidates, which is exactly why campaigns became candidate-centered and media-driven.
Candidate Recruitment (Unit 5)
Dealignment weakens the party's gatekeeping power over who runs. With direct primaries and direct media access, candidates can build their own brand and fundraising network, so the DNC and RNC have less say over their own nominees than party bosses once did.
Party Control (Unit 5)
Dealignment and party control move in opposite directions. The more voters detach from parties, the less leverage parties have over nominations, messaging, and mobilization, forcing them to adapt their strategies to win over independents and persuadable voters.
Whig Party (Unit 5)
The Whigs' collapse in the 1850s is the classic example of realignment, where voters shift to a new party coalition. Holding it next to dealignment makes the contrast click. In realignment, loyalty moves somewhere new; in dealignment, loyalty just evaporates.
No released FRQ has used 'party dealignment' verbatim, but the concept shows up in multiple-choice questions built around data, like a line graph showing the percentage of self-identified independents climbing since the 1960s, where you have to name the trend and explain a consequence (less predictable elections, weaker party mobilization). It's also fair game in a Concept Application FRQ asking how parties have adapted to a changing electorate. The move you need to make is causal. Don't just define dealignment; connect it to a party function from 5.3.B, like 'because fewer voters identify with a party, parties have shifted resources toward data-driven targeting of independents.'
Realignment is when voters switch sides; dealignment is when voters stop picking a side. In a realignment, a major event (often a critical election) shifts whole groups of voters from one party's coalition to the other's, creating a new durable majority. In dealignment, voters don't move to the other party, they detach from parties altogether and become independents. Quick test for MCQs: if the data shows one party gaining loyal voters, it's realignment; if the data shows independents rising while both parties' shares shrink, it's dealignment.
Party dealignment is the post-1960s trend of voters dropping party loyalty, shown by rising numbers of self-identified independents and more split-ticket voting.
Dealignment is different from realignment, where voters shift their loyalty to the other party instead of abandoning parties entirely.
Candidate-centered, media-driven campaigns both caused and resulted from dealignment, since candidates can now reach voters without the party machine.
Dealignment weakens every party function listed in the CED, including voter mobilization, candidate recruitment, and campaign management (AP Gov 5.3.B).
Because parties are a linkage institution, dealignment means voters increasingly rely on media and interest groups to connect with government (AP Gov 5.3.A).
Dealignment makes election outcomes less predictable because fewer voters can be counted on as automatic partisans.
Party dealignment is the trend, emerging after the 1960s, in which a growing share of voters abandons party loyalty, identifies as independent, and splits their ticket. It weakens parties' ability to mobilize voters and control nominations, and it's tested in Topic 5.3 of Unit 5.
Realignment means voters switch parties, often after a critical election, creating a new lasting coalition. Dealignment means voters leave parties altogether and become independents. If exam data shows independents rising while both parties shrink, that's dealignment.
No. Parties are still powerful linkage institutions that recruit candidates, write platforms, raise money, and organize Congress through committee and leadership systems. Dealignment means they've had to adapt, especially by targeting independents and adjusting media strategy, not that they've disappeared.
The three classic indicators are a rising percentage of self-identified independents, increased split-ticket voting (choosing different parties for different offices on one ballot), and weaker straight-ticket voting. AP Gov MCQs often present these as trends in a graph or table.
Media-driven, candidate-centered campaigns let candidates reach voters directly through television and later digital media, reducing reliance on party organizations. Combined with broader social change, this loosened voters' long-standing attachments to the two major parties.
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