# Partisan Sorting **Partisan sorting** is the process by which party identity comes into **alignment** with ideology, religion, race, geography, and lifestyle — so that knowing someone's party lets you predict a widening range of other things about them. It is frequently confused with [[Polarization]], but the two are distinct: sorting means the parties have become more **internally consistent and better-aligned**, not necessarily that anyone's views have become more **extreme**. ## Sorting vs. polarization This distinction is the crux. Decades ago each party contained ideological multitudes — there were liberal Republicans and conservative ("Dixiecrat") Democrats. Sorting cleaned that up: liberals are now Democrats and conservatives Republicans, so the *overlap* between the parties has collapsed even where the *distribution* of underlying opinion has shifted less than the heated rhetoric implies. Matthew Levendusky's *The Partisan Sort* documents this realignment of ideology onto party; Bill Bishop's *The Big Sort* documents its **geographic** form — Americans increasingly living among the like-minded. ## Why sorting matters Even without making individuals more extreme, sorting is destabilizing: - **It builds the teams.** When party lines up with race, religion, and place, partisanship becomes a **mega-identity** stacking many group loyalties onto one label — the precondition for [[Affective Polarization]]. - **It removes cross-pressures.** Voters who once held mixed identities (a pro-life Democrat, a pro-choice Republican) felt internal tension that moderated behavior; sorted voters feel none, so partisanship hardens. - **It nationalizes and sorts geographically.** Like-minded clustering reduces everyday contact across lines and makes districts and states safer, feeding the dynamics behind [[Gerrymandering]] and election nationalization. ## Relationship to realignment Sorting is the modern engine of [[Realignment]]: the post-1960s migration of Southern whites into the Republican Party and of socially liberal suburbanites into the Democratic Party reorganized both coalitions along ideological, racial, and religious lines, producing today's tightly sorted [[Seventh Party System]]. ## KB Significance Partisan sorting is the structural precondition for almost everything else in the [[Political Behavior]] cluster: it is what turns ordinary disagreement into identity conflict, what makes [[Affective Polarization]] and [[Negative Partisanship]] possible, and what gives the right's identity-based mobilization (religion + race + nation fused into "real American") its purchase. Keeping sorting analytically separate from polarization prevents the common error of assuming the public has grown uniformly radical when it has mostly grown uniformly **aligned**. ## See Also - [[Polarization]] — the concept sorting is often confused with. - [[Affective Polarization]] · [[Negative Partisanship]] — what sorting enables. - [[Realignment]] · [[Political Behavior]]