Complex sentence: He was a candidate to succeed Ed Broadbent in the 1989 NDP leadership convention finishing fifth and lost his seat in the 1993 federal election that nearly wiped out the NDP.
Split into simpler sentences: He was a candidate to succeed Ed Broadbent in the 1989 NDP leadership convention, finishing fifth. He lost his seat in the 1993 federal election, which nearly wiped out the NDP.