Maurilio Ochoa
... that "pregnant" ballot boxes prompted the PRI to challenge an election in which its candidate, Maurilio Ochoa, lost?
... that "pregnant" ballot boxes prompted the <a href="./Institutional_Revolutionary_Party" id="mwBVI" rel="mw:WikiLink" title="Institutional Revolutionary Party">PRI</a> to challenge an election in which its candidate, <b id="mwBVM"><a href="./Maurilio_Ochoa" id="mwBVQ" rel="mw:WikiLink" title="Maurilio Ochoa">Maurilio Ochoa</a></b>, lost?