[2] The counties stretch from the western shore of Lake Winnebago down the Fox River to Green Bay.
[4] The region also excludes the similarly sized Fond du Lac County as it is more solidly Republican and last voted for a Democrat for president in 1964.
[7][3] The area is one of the most purple (evenly divided) in the state,[8] and a key swing region.
[10] In the 2016 United States presidential election in Wisconsin, Donald Trump received the most votes for president in the BOW counties but with smaller margins than the WOW counties.
[10] However, in 2020 it was one of 21 regions in the country identified that had an impact on Joe Biden's victory.