If we exclude Alaska then about half the coast encompasses Texas through North Carolina. This is also the part of the US coast that is most low lying and will see the greatest encroachment from rising sea levels.

Half of your “red” coastline consists of Florida—the vast majority of the coastal population of which is blue (see any 2016 electoral map).

Your point about red vs blue isn’t at issue here. These are all still the coastal states that are the most vociferously denying climate change. You’ll find it pretty hard to argue that any of them are more in favor of climate change action that the other coastal states regardless of whether they show up blue or red on an election map.

Of course. But we didn't really start off by arguing about state-level beliefs. You claimed the people most affected by sea level rise least believe in it--presumably as a dig at republicans (haha they're so blinkered by ideology they can't even see their own self interest!) And I claim that, no, republicans mostly do not live on the coasts, are not the most affected, and thus there is no tension between their ideology and their self-interest.

The northeast and west, perhaps, but not the south and southeast.