Yes, Oakland County, Michigan has not voted for a Republican presidential candidate since 1992.
Oakland County, Mich.
Voted For:
Clinton/Gore 1996
Gore/Lieberman 2000
Kerry/Edwards 2004
Obama/Biden 2008
Obama/Biden 2012
Clinton/Kaine 2016
https://en.wikipedia.org/wiki/Oakland_County,_Michigan#Politics
Other than that, Oakland County still votes Republican at the statewide and local level. Yes, Oakland County is a classic suburban bastion of Detroit.
But why?
It's a county essentially founded on segregation. As
L. Brooks Patterson has said, repeatedly, he thinks Detroit should drop dead and that its well-being is completely unimportant to the well-being of Oakland County. In his own words, "What we’re gonna do is turn Detroit into an Indian reservation, where we herd all the Indians into the city, build a fence around it, and then throw in the blankets and corn." Detroit is associated with Democrats; thus, Oakland County votes for Republicans, who are best seen as protecting the county from the "undesirables" of Detroit.
