Sources: 
Al Jazeera America, “Legal pot wins in Oregon, Alaska and Washington, DC”, November 5, 2014.
Mother Jones, “Map: The United States of legal weed”, November 5, 2014.
Pew Research, "Marijuana in America: shifting attitudes, events and laws", 2014.
Reuters, "Voters give nod to legal marijuana in Oregon, Alaska, and Washington DC", November 5, 2014. 
Vox, "Marijuana legalization sweeps the 2014 elections", November 5, 2014.