I don't know where you "learned" math, but a 40% turnout -- evenly split between RATS and Republicans -- means that 40% of each stripe voted. 40% is 40%, dimwit.
No -- 40% total turnout means about half were dems and half were republican. That means about 20% each turned out.
Dimwit???
Nowhere does it say 40% of each party.
40 % TOTAL (79 million)