Over the last fifty years, the Republican Party has gradually claimed a majority of state legislative seats and chambers. What explains this? Scholars point to Republican grassroots mobilization of conservative voters in the late-twentieth century. This Essay adds another explanation: Republicans win disproportionate state legislative seat shares by winning rural districts by narrow, efficient margins and by changing state legislative redistricting practices, sometimes by state constitutional amendment. This Essay recounts this history, noting how in the mid-twentieth century, rural-dominated state legislatures failed to mandate fair, regular reapportionment, prompting the Supreme Court in 1964 to force the states to reapportion their legislatures and entrench fair redistricting and voting rights provisions in their state constitutions. Reapportionment added conservative, suburban districts, expanding Republicans’ state legislative seat share in the 1970s, 1980s, and 1990s. With subsequent urban-rural polarization and realignment, Republicans began winning rural districts by narrow, efficient margins, while Democrats won urban districts by wide, inefficient margins, letting Republicans win a greater statewide legislative seat share than popular vote share. Insulated from the popular vote, especially in competitive states, Republican state legislators entrenched their seats by changing elections and redistricting practices, sometimes through state constitutional reform that weakened earlier voting rights and redistricting provisions.
LawReview
