Complex sentence: In November 2017, magazine "Proceso" published an article that showed evidence of the PRI breaking at least 16 state laws during the elections, which where denounced 619 times, all whose were broken in order to favor del Mazo during the election.
Split into simpler sentences: In November 2017, magazine "Proceso" published an article accusing the PRI of breaking at least 16 state laws during the elections, which were denounced 619 times. They said that all of them were broken in order to favor del Mazo during the election.