Harley,

No it exists in both and is not mutally exclusive . The common definition is as you state but if you look at line 3 in websters def. you will see this. "a stage of society in Marxist theory transitional between capitalism and communism and distinguished by unequal distribution of goods and pay according to work done" This is clearly the aim of the Democratic party and therefore making it socialist.
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Liberalism is a mental illness!