Complex sentence: Chiarelli was elected as the first mayor of the newly amalgamated city of Ottawa on November 13,2000, and was re-elected on November 10,2003 (see 2003 Ottawa election for full results).
Split into simpler sentences: Chiarelli was elected as the first mayor of the newly amalgamated city of Ottawa on November 13,2000. He was opposed by Chiarelli was re-elected on November 10,2003 (see 2003 Ottawa election for full results).