United States presidential election maps
In the United States, the president is elected through the electoral college system. Presidential elections take place every four years.
Colors
No major party has been historically associated with any particular color. In the 20th century, network television electoral maps alternated colors to avoid the appearance of bias. Maps depicting results of the 2000 election used blue to represent states supporting Democrat Al Gore and red for those supporting Republican George W. Bush. The contention and controversy of that election ingrained the red state vs. blue state divide in public consciousness, and since then red has been closely associated with Republicans and blue with Democrats.
Maps
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