WILMINGTON, Del. — Former Delaware Gov. Mike Castle, a Republican moderate who championed creating the popular 50 State Quarters Program of commemorative coins while he served in Congress, has died. He was 86. The Delaware Republican Party announced that Castle died Thursday in Greenville but shared no other details.

Republican Michael N. Castle, a fixture in Delaware politics for a half-century who served as governor and in Congress, died Thursday at age 86.