The special general election for Northern Mariana Islands House of Representatives District 3 is on Oct. 16. Corina Magofna (D) is competing against Grace Sablan Vaiagae (R). The filing deadline to run passed on Sept. 3.

The special election became necessary after Ivan A. Blanco (R) died while in office on July 23. Blanco served from 2017 to 2021.

The Northern Mariana Islands House of Representatives includes eight Republican members, eight Democratic members, three independents, and one vacancy.

Ballotpedia does not track the number of special elections taking place in U.S. Territories such as the Northern Mariana Islands. However, as of October 2021, 64 state legislative special elections had been scheduled for 2021 in 21 states. Between 2011 and 2020, an average of 75 state legislative special elections took place each year.