With Democrats consistently strong along the East Coast and West Coast, Republicans dominant in the South and much of the Great Plains, the two parties now often fight most fiercely over a band of burly states that run west from Pennsylvania into Ohio, Wisconsin, and Michigan, and then Iowa. …
Validating this reputation, these five Rust Belt swing states have measurably shifted their presidential allegiance over the past two decades. CONT.
Ronald Brownstein, National Journal