There is a lot of subjectiveness to this. While some states are obvious, there are others that could be argued to be swing, and a few (such as Florida named above) that have become solid. Also, Minnesota has never been swing, it has been the most consistently Democratic state, if we are talking about Presidential elections.
I made this a while back and looking at it I dont even know my source lol. Most of these dont make sense looking back at it. Colorado isnt a swing state I know that. Im just gonna keep it cuz why not
Also on what planet is California republican, fix this!