Complex sentence: Local businessman Matthew Ricchiazzi was reported in June 2013 to be circulating petitions for a possible mayoral campaign, which may touch off a rare Republican primary between him and Rodriguez.
Split into simpler sentences: Local businessman Matthew Ricchiazzi was reported in June 2013 to be circulating petitions for a possible mayoral campaign. If a Ricchiazzi campaign had actually materialized, it would have touched off a rare Republican primary between him and Rodriguez.