Complex sentence: He lost his bid for re-election in the Republican Revolution of 1994 in a rematch against his 1992 opponent, Richard "Doc" Hastings, a defeat often attributed in large part to his vote for the 1994 federal ban on semi-automatic firearms.
Split into simpler sentences: He lost his bid for re-election in the Republican Revolution of 1994 in a rematch against his 1992 opponent, Doc Hastings. Inslee attributed his 1994 defeat in large part to his vote for the 1994 federal ban on semi-automatic firearms.