I'm not sure what this is trying to say. What do the bars represent? At first I thought it was a proportion but Montana doesn't go to one. KY/AK the middle states which have the line of 32.5% (the number that matches with your Y axis) seem to be 3 or 4 times the size of Delaware, not 32.5%x.

I understand that states are given representatives at a ratio of one rep per appx. 750k people. No state is able to be exactly divided into 750k people, so some states are going to be slightly over and slightly under that number. Couldn't the variance be ascribed to random chance?