Complex sentence: The other Hamilton area MPs shifted to the eastward half of their ridings, but Valeri decided to run in the western half, resulting in a passionate nomination battle with former cabinet heavyweight and now backbencher Sheila Copps.
Split into simpler sentences: The other Hamilton area MPs shifted to the eastward half of their ridings, Valeri has decided to run in the western half, however. This has produced a nomination battle with former cabinet heavyweight and now backbencher Sheila Copps.