Rafaela Orozco Romo, 47, was standing as an independent candidate for the 31 District of Iztapalapa, the poorest borough in Mexico City, in the Federal District Legislative Assembly.
Despite gathering enough signatures to support her application, the National Election Institute prevented her from standing as she had forgotten to submit her expenses.
To make a stand, the aspiring politician crucified herself on a giant 20 foot wooden cross in front of the National Election Institute, in Mexico City.
Wearing no shoes and only white leggings and a cream top, she was tied to the cross for two hours.
She was accompanied by around 40 people carrying signs, who protested against the decision.
A doctor climbed up to monitor her blood pressure every 15 minutes to ensure her health was in check.
The stunt caused traffic chaos in the area and afterwards she slammed the decision to ban her from standing.
"Participating in the election was not my personal decision. The coordinators of neighbourhoods, transport and local businesses decided I should do this. The people decided and I only accepted," she said.
The local elections are being held in Mexico on June 7. The Legislative Assembly in Mexico consist of 66 'deputies', of which 40 are elected by the first-past-the-post system and 26 by proportional representation.