Red is for Republicans and blue is for Democrats, an association that only became cemented during the 2000 election.
Here's why Republicans are 'red' and Democrats are 'blue
Red vs. Blue: A history of how we use political colors - The
CREST Network, Author at CREST Real Estate Network
How Red or Blue are Michigan's Political Maps and Election
When Republicans Were Blue and Democrats Were Red, History
The Color Of Politics: How Did Red And Blue States Come To Be? : NPR
How the red and blue map evolved over the past century
Two Americans talk across the political divide
Not all states are red or blue: in search of the purple states
CREST Network, Author at CREST Real Estate Network
These are the hottest political design trends of 2020
Where Democrats And Republicans Live In Your City