Hillary Clinton is the first presidential candidate not to visit Wisconsin during the election since 1972.
Barack Obama swept to victory there in the 2008 election beating John McCain by a 13.91% margin and in 2012 he beat Mitt Romney by a 6.94% margin.
If Donald Trump wins there, Clinton not visiting will be a grave error for the Democrat.
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Image courtesy of U.S. Department of State via Flickr, with thanks