Why haven't/don't states do smaller interstate Electoral College compacts?

[tnowacki]

I really like this idea, although a too big bloque would probably attract all attention and leave other states, in particular those, who are strongly partisan, out of attention. However, there is a overrepresentation of smaller states in the Electoral College, as I have read.

Anyway, as an European I'd suggest that NPV is still the best.