Map of Nebraska, showing which of four candidates—Mike Boyle, Bill Harris, Bill Hoppner, and Ben Nelson—won a plurality in each county in the 1990 Democratic gubernatorial primary.  Based on numbers in "Official Report of the Board of State Canvassers of the State of Nebraska: Primary Election May 15, 1990, General Election November 6, 1990", primary election, p. 10, retrieved 2016-01-19.  Boyle and Nelson tied in Grant County, with 19 votes each.
Own work
Ammodramus