A Capital News Service study of campaign finance filings found that retirees made about 10% of the contributions to candidates for county treasurer, sheriff and drain commissioner. Retirees also made up close to 6% of the 642 contributions that were over $500. Retirees tend to be more involved in local politics because they have time and money. And even though they may contribute more money in some of the state’s most populous counties, their relative clout is more significant in the smaller counties where they often retire. While nearly a third of Michigan’s residents are 50 or older, one survey found that 60% of Michigan voters in the November 2018 election were 50 or older. By Jasmine Hall and Hannah Brock. FOR ALL POINTS. Editors note: This story is part of a CNS series on money in county political races that can be used up to the election and beyond. The rest of the stories with graphics: County Campaign Finance.