Complex sentence: Graff took the NDP to court in March, which resulted in a settlement allowing him to apply a second time, and he is now going back to court in an attempt to obtain a court order requiring the NDP to permit him to run.
Split into simpler sentences: Graff took the NDP to court in March, which resulted in a settlement allowing him to apply a second time. After the party's second rejection, Graff is returning to court in an attempt to obtain a court order requiring the NDP to permit him to run.