Question

why was every election won by the party called PIR in Mexico explain any three reasons

Answer 1

mexico got its independence in 1930 since then every election was won by 
PRI . PRI is known to use many dirty tricks to win the election . all the people who are employed by the government were forced to attend the party meeting . 
government teachers had to force the parents to vote for PRI . sometimes the polling booth were changed a the last moment making it difficult for the people to cast their vote