"..,it wasnt until the 1964 election that residents of the District of Columbia were finally able to cast a ballot for President and Vice President of the United States," said Durbin. (quote #1)
The New Columbia Admissions Act, S. 3696,.., It would create a 51st state called New Columbia. In January 2011, Rep. Eleanor Holmes Norton, D-DC, introduced companion legislation in the House, H.R. 265. (quote #2)
District of Columbia has over 600,000 residents, similar to that of Wyoming, Vermont and North Dakota.
It would not incorporate sections of D.C. where most government buildings and the Mall are located. That area would remain .., as a federal district. ( quote #3)
*sources: Huffington Post, Wikipedia, Washington Times
*quotes 1,2, 3 from Sen. Lieberman's Press Release