I tried the 1912 mod, and while its pretty good, there are some weird things worth noting.
It gives the option of running as Debs, but you can't run as Debs. If you try, you get literally told to f--- off. You can't run as Taft either, picking the Taft option takes you to the 2000 scenario and running as Bush.
You can run as Roosevelt and Wilson, and the mod proceeds normally. I tried as Roosevelt and wound up with the historical result, almost identical popular vote totals, and Roosevelt carried the states he carried historically plus Maine, and Taft carried the two states he carried historically plus New Hampshire. Trying as Wilson, I blew the election by being too comfortable with Tammany Hall, which apparently cost a big drop in Wilson's support, though he still won the nationwide popular vote. I'm not sure if that is historically accurate.