Complex sentence: Before moving to Maryland, he was a long-time resident of Honolulu, Hawaii where he served in the Hawaii State House of Representatives from 1970 to 1974 and the Hawaii State Senate from 1974 to 1978.
Split into simpler sentences: Before moving to Maryland, Leopold was a long-time resident of Hawaii. He served in the Hawaii State House of Representatives from 1970 to 1974 and the Hawaii State Senate from 1974 to 1978.