# Ballot Order Effect **Ballot order effect** (also *primacy effect*) is the measured tendency of a candidate to receive a larger vote share when listed earlier on the ballot than when listed later, holding everything else constant. It is the empirical fact that makes ballot-order *rules* — who decides the order, and on what basis — a question of election administration rather than of typography. The best-identified estimates come from **California's alphabet lottery**, which randomizes the candidate order for statewide offices and therefore functions as a randomized natural experiment. Ho and Imai, analysing 80 statewide races from 1978 to 2002, found: - **General elections:** no detectable effect for major-party candidates (Democrats +0.05 pp, Republicans −0.06 pp, both within standard error); small gains for minor parties (Green +0.56 pp, Libertarian +0.23 pp); and the largest general-election effect for **nonpartisan** candidates, about **+1.95 pp**. - **Primary elections:** roughly **+2 pp of party vote** for major-party candidates (D +1.89, R +2.16), far larger for minor parties (Libertarian +6.59, Peace and Freedom +6.31), and **+3.44 pp** for nonpartisan candidates. - The authors estimate ballot order "might have changed the winner in as many as 12 percent of all primary races examined," and they reduce the much-cited 9.5-point Krosnick, Miller and Tichy estimate for the 2000 presidential race to about 1 point, not statistically significant. The pattern across the literature is consistent: **the effect grows as information falls.** It is near zero where voters have party labels and incumbency cues, and largest in primaries, nonpartisan contests, and low-salience down-ballot races. ## Why it matters structurally Because the effect is real but small, courts have had little trouble finding that ballot-order statutes burden *someone* and considerable trouble finding a plaintiff who may say so. See [[Jacobson v. Florida Secretary of State]], vacated on standing and political-question grounds rather than on the merits, and [[Bost v. Illinois State Board of Elections]], which in January 2026 granted candidates broad standing to challenge election rules and may reopen the door Jacobson closed. As of 2026, ballot order also carries a **procedural** consequence for the first time: Georgia's SB 3EX conditions an automatic hand-recount duty on whether a covered statewide office appears first or second on the ballot. See [[State Ballot Position Crosswalk]]. ## See also - [[State Ballot Position Crosswalk]] - [[How a Candidate Gets on the Ballot]] - [[Recount Trigger Crosswalk]] - [[Recount]]