This is a list of political elections that had their results cancelled or decertified after they were held, sometimes legally, sometimes following a coup or revolution. Partial cancellations (one or some districts) are omitted.

National elections

• 1918 Estonian Constituent Assembly election
• 1925 Bolivian presidential election (won by José Gabino Villanueva)
• 1930 Brazilian general election (won by Júlio Prestes, followed by Brazilian Revolution of 1930)
• 1931 Ecuadorian presidential election (won by Neptalí Bonifaz Ascásubi)
• 1934 Bolivian general election (won by Franz Tamayo)
• 1936 Peruvian presidential election (won by Luis Antonio Eguiguren)
• 1948 Costa Rican general election (won by Otilio Ulate Blanco, followed by Costa Rican Civil War)
• 1957 Guatemalan presidential election (won by Miguel Ortiz Passarelli)
• 1958 Cuban presidential election (won by Andrés Rivero Agüero, followed by Cuban Revolution)
• 1960 Iranian legislative election^[1]
• 1962 Argentine legislative election (annulled by a coup 10 days later)
• 1962 Peruvian general election (won by Víctor Raúl Haya de la Torre)
• 1967 Sierra Leonean general election (Siaka Stevens took the oath of office as prime minister but was overthrown the same day)
• May 1968 Dahomeyan presidential election (won by Basile Adjou Moumouni)
• 1970 Dahomeyan presidential election (won by Justin Ahomadegbé)
• 1970 Lesotho general election (won by the Basotho Congress Party)
• 1978 Bolivian general election
• 1982 Guatemalan general election (won by Ángel Aníbal Guevara, followed by a coup d'état)
• 1986 Philippine presidential election (won by Ferdinand Marcos, followed by the People Power Revolution)
• 1989 Panamanian general election (won by Guillermo Endara, nullified before voting was complete, followed by United States invasion of Panama)
• 1990 Burmese general election (won by the National League for Democracy)
• 1991 Algerian legislative election (won by the Islamic Salvation Front, followed by Algerian Civil War)
• 1992 Central African general election
• 1993 Nigerian presidential election (won by Moshood Kashimawo Olawale Abiola)
• April 1997 Malian parliamentary election
• 2000 Peruvian general election
• 2003 Georgian legislative election (followed by Rose Revolution)
• September 2003 Papua New Guinea vice-regal election (parliamentary vote won by Sir Albert Kipalan)
• December 2003 Papua New Guinea vice-regal election (parliamentary vote won by Sir Pato Kakaraya)
• 2004 Abkhazian presidential election
• The original second round results of the 2004 Ukrainian presidential election (won by Viktor Yanukovych, followed by Orange Revolution)
• 2005 Kyrgyz parliamentary election (followed by Tulip Revolution)
• April 2006 Thai legislative election (followed by 2006 Thai coup d'état)
• 2010 Icelandic Constitutional Assembly election
• 2011 Kosovan presidential election (parliamentary vote won by Behgjet Pacolli)
• 2011 South Ossetian presidential election (won by Alla Dzhioyeva; Leonid Tibilov elected in 2012)
• 2011–12 Egyptian parliamentary election
• 2012 Guinea-Bissau presidential election (second round canceled after a coup d'état)
• February 2012 Kuwaiti general election
• December 2012 Kuwaiti general election
• 2013 Maldivian presidential election (first round re-run)
• 2014 Thai general election (followed by the 2014 Thai coup d'état)
• 2015 Haitian presidential election
• The original second round results of the 2016 Austrian presidential election
• 2017 Kenyan general election (only the presidential election which was initially called for Uhuru Kenyatta)
• 2019 Malawian general election
• 2019 Bolivian general election (followed by the 2019 Bolivian political crisis)
• 2019 Abkhazian presidential election
• October 2020 Kyrgyz parliamentary election (caused by mass protests)
• 2020 Myanmar general election (followed by the 2021 Myanmar coup d'état)
• 2023 Gabonese general election (followed by the 2023 Gabonese coup d'état)

Local elections

• New York State Congressional election of 1812. State awarded an additional 10 districts after comparing 1790 census to 1810 census results. New election held in December 1812.
• 1974 United States Senate election in New Hampshire
• 1974-75 Louisiana's 6th congressional district election (original election invalidated after voting machine malfunctions; Henson Moore elected in rematch over Jeff LaCaze)
• 2000 Molise regional election
• 2011 Molise regional election
• September 2018 Primorsky Krai gubernatorial election
• 2018 North Carolina's 9th congressional district election (won by Mark Harris; Dan Bishop elected in 2019)
• March 2019 Istanbul mayoral election
• 2021 Berlin state election
• 2023 Gabonese departmental elections and 2023 Gabonese local elections (followed by the 2023 Gabonese coup d'état)

Elections where the winning candidate died before taking office

• 1918 Brazilian presidential election (won by Francisco de Paula Rodrigues Alves)
• 1928 Mexican general election (won by Álvaro Obregón, assassinated)
• 1967 South African presidential election (won by Theophilus Dönges)
• 1982 Lebanese presidential election (won by Bashir Gemayel, assassinated)
• 1985 Brazilian presidential election (won by Tancredo Neves)

Referendums

• 1990 Cordillera Autonomous Region creation plebiscite
• 2006 Shariff Kabunsuan creation plebiscite
• 2017 Slovenian railway referendum
• One of the 2016 Swiss referendums on taxation, overturned in 2019 by the Federal Supreme Court.^[2][3]