Primary definition
For an electoral district, the average number of representatives elected by each party and grouping. For a country, the average of the party magnitudes for all electoral districts.
Also known asmagnitude · district magnitude · average party magnitude · mean party magnitude · party size · electoral magnitude · M · PM
1 sources cited4 related termsReviewed Aug 9, 2026
— ACE Electoral Systems GlossaryView source
Understand more election terms clearly
Get one important election term explained each week, with authoritative sources, practical context and related definitions.
Free. One useful email each week. Unsubscribe anytime.Learn more about the ESG newsletter →
ACE
For an electoral district, the average number of representatives elected by each party and grouping. For a country, the average of the party magnitudes for all electoral districts.
ACE Electoral Systems Glossary · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Party Magnitude. In Election Security Glossary. Retrieved August 22, 2026, from https://electionsecurityglossary.com/glossary/party-magnitude
Sources
1 cited · last checked Aug 9, 2026
01
ACE Electoral Systems Glossary
ACE Electoral Systems Glossary
Single-source
Get the weekly election term
Receive one cited, source-backed election explanation in your inbox each week.
Get election terms explained weekly →
Free · Nonpartisan · Unsubscribe anytime.