An Arizona congressional candidate who legally changed his name to Cesar Chavez will be removed from the Democratic primary ballot.

A judge ruled Tuesday that hundreds of signatures that Scott Fistler gathered to get on the Aug. 26 ballot were invalid.

Fistler changed his name to that of the late farm labor leader last December and switched party affiliations in April.

Fistler previously lost two bids for elected office. He was seeking a seat in the heavily Hispanic and heavily Democratic 7th Congressional District, which includes parts of Phoenix and Glendale.

He acted as his own attorney at Tuesday's hearing and vowed to appeal the judge's decision to the Arizona Supreme Court.

Chavez's grandson filed a legal complaint against Fistler, saying the candidate's name change was intended to defraud voters.