Chapter 2Grounds for Contest
Section § 16100
If you are a voter in a county, city, or smaller political area in California, you can challenge an election there if certain issues occurred. These issues include election board misconduct, an ineligible person being elected, bribery or illegal offers related to the election, illegal votes being counted, eligible voters being stopped from voting, errors by the election board that affect the outcome, or mistakes in vote counting.
Section § 16101
If you're a candidate in a primary election and want to challenge another candidate's nomination, you can file an affidavit. The grounds for this challenge include the other candidate not being eligible, committing an election-related offense, or issues with the vote count. Problems like illegal or improper votes, eligible voters being denied the chance to vote, or major errors in counting votes that could change the election outcome are all valid reasons for contesting.