Whether former swing states, captured ex-solid states, or states that have always had close margins. I picked 7 for each side(I was gonna do 3, then 4, then 5, but the number on one side always felt awkward like one side had a weird outlier edge case or something. Pink has a clean base of 4 while Cyan has two main ones and then like, 5 is the next one where it all fits)

Pink States are Iowa, Ohio, and Florida(former Swing States in the 2000-2016 era), Texas, South Carolina, and Alaska (Red States weakening) and Indiana(2008 pick up that’s been red before and after).

Cyan States are Virginia, New Mexico, Colorado, and New Hampshire(former swing states in the 2000-2016 era), plus Maine and Minnesota(perpetually teetering states) and New Jersey(Blue state weakening).