Better question, who allowed the democrats to use the color blue and republicans red? Didn’t it used to be reversed?
IIRC it was during the 1980 election when Ronald Reagan trounced Jimmah Carter that the MSM dictated that electoral maps depict states for Reagan as red & those for the Peanut as blue.
The USSR was active & dangerous in those days and the color red denoted pro-communist leanings (which many Democrats were and are). Hence the intentional reversal.
I asked the same question, and I think I was told that in the past, they alternated the colors - and sometimes used other colors; but in recent years the Red-R/Blue-D has stuck.
-JT
Tim Russert changed the color scheme in 2000. Prior to that...red was for democRAT/communists.
I remember David Brinkley looking at the electoral map on election night in 1984 (Reagan landslide) and saying “it looked like a big blue, suburban swiming pool” I dunno when it changed, probably the MSM didn’t like the Dems being associated with Soviet red.
You beat me to it.