Complex sentence: In the 2013 Senate election, Pirate Party Australia did not run candidates in WA, but did in this rerun, preferencing Scott Ludlam of the Australian Greens as their next highest preference.
Split into simpler sentences: In the 2013 Senate election, Pirate Party Australia did not run candidates in WA. The party preferenced Scott Ludlam of the Australian Greens as their next highest preference.