No district will be “red” or “blue.”
Oh, BS! Take states like Wyoming, which for House elections, already works in accordance with Fair's design. If five people ran, WY will still have one winner people winning and being sent to the House of Representatives will be from one party.
In a state like MS, however many Republicans run in a given district will win, except and unless (1) there is a "big city" in that district, in which case all the winners will be democrats, or (2) there are fewer candidates running from a given party than there are available seats to be had. For instance:
- State X has 5 seats in the House and is predominantly Republican in all districts.
- If three Republicans and seven Democrats run, yes, there will be some Democratic representation from State X.
- If five or more Republicans and any quantity of Democrats run, it's unlikely that a Democrat will win any of the seats because all Republican candidates are likely to get more votes than any Democratic candidate.