It damn well should be unconstitutional. But they haven’t been able to get red states to sign on to it, which is apparent from the map, so...it has never been enacted formally and bindingly.
Apparently, it is a “State’s Rights” issue, and this is their idea to get out from under the terrible (for their schemes) Electoral College.
After all, today’s Leftists are much smarter than our Founders were, right????
The electoral college was designed to protect the small states from being dominated by the large ones in a national election. If any small state signs on to the his compact, the fools who led that movement should be recalled from office.