1. Elected office for which candidates appear on the ballot without political party designation.
Source: Election Terminology Glossary - Draft, National Institute of Standards and Technology (NIST), https://pages.nist.gov/ElectionGlossary/
2. Elected office for which candidates run without political party affiliation.
Source: Glossary of terms database, U.S. Election Assistance Commission, https://www.eac.gov/glossary/