Who started the winning (or losing streak) for both parties in each state

[Undecided Voter in the Midwest]

The two big realigning elections of recent times (well, my lifetime anyway) were 1980, when Reagan took the south from the Democrats for good (the signs of the "breakup" of the Solid South were apparent as early as '48 with the rise of Strom Thurmond, of course), and 1992, when Clinton took the northeast and left coast from the GOP while picking up Michigan and Illinois as well.

I don't know when we'll see another election like those again. My guess is: not for quite a while. The two Americas seem to be very deeply divided on almost all of the issues, and I don't see anyone from either party winning over any region that is currently trending to their opposition (e.g., Democrats rising again in the south, Republicans gaining ground in the northeast, etc) anytime soon.

[Undecided Voter in the Midwest]

Biggest change was in 2008 when co, nv, and nh became bellweathers like ohio. Along with pa, wisc,iowa, and nm enroute to 271 or 272.

NV's been a bellwether for a long time, with Jimmy Carter being the only winning candidate since 1912 not to carry the state. Funny that it doesn't really seem to have a reputation as a bellwether though, like Ohio does and Missouri used to.

[Undecided Voter in the Midwest]

Biggest change was in 2008 when co, nv, and nh became bellweathers like ohio. Along with pa, wisc,iowa, and nm enroute to 271 or 272.

NV's been a bellwether for a long time, with Jimmy Carter being the only winning candidate since 1912 not to carry the state. Funny that it doesn't really seem to have a reputation as a bellwether though, like Ohio does and Missouri used to.

However for years it was much more Republican than the nation as a whole. It's only recently become more Democratic overall.

That's a valid point.