The data looks solid, and a nice presentation. But causation is still unproven. I could probably show a similar correlation with population density, reliance on mass transit, or the number of elevators for example.
Now it may be that Blue state Governors have put restrictions in place sooner and kept them longer, but you’d need data to prove that. I remember Mike DeWine in Ohio (R) was one of the first, for example.
I agree we should do our own research and applaud your efforts, but what you show is correlation, not causation.
Just look at the the like New York, New Jersey, Illinois, California, and Pennsylvania. Their policies towards nursing homes, on the use and distribution of HCQ, and on the length and severity of their shutdowns... it is the agenda of their leaders and the policies that they enact that have hurt their states.