If red states open in 2 weeks and blue states stay closed, then in 4-5 weeks you could have a bunch of open red states where case counts are increasing and closed blue states where they're decreasing and by that point perhaps quite low, which will create some weird dynamics.

Although on second thought I'm not so sure that it will play out in so partisan a way.

It's possible there are certain high-profile fights (i.e. over beaches) while in practice most states are taking fairly similar baby-steps to re-opening but framing them in different terms.