Since predictions this far out don't matter, there is an unlikely scenario I thought of that could lead to a 50/50 election looking like the above map.
Democrats will never carry Oklahoma, Alabama and Mississipi, whereas Republicans will never carry New York, Vermont and Hawaii. I have serious doubts about your map.
This is what would the 2020 map look like with the same trends that in 2008 ( I applied a correction for home states, 10 pts for president and 5 for V-P ) and with a toss-up on the popular vote.
Obviously this map doesn't seem very realistic : I don't think that republicans will carry Illinois. However, it show us interesting things about Arizona and the west coast... Democrats have still a structural advantage ( 282 E.V. )
I guess someone never heard of Ronald Reagan... or when the Republican Party was the party of the North.
