One-fourth of the 1,000 American adults who recently participated in a survey said they favor D.C. statehood.

Only 25 percent think the nation’s Capital should become a state, while 54 percent disagree and 21 percent are undecided.

Only 12 percent think it would be good for the U.S. to add more states, while 44 percent believe it would be bad for the country, 24 percent think it would have no impact and 20 percent are undecided.

Support for D.C. statehood is up slightly from 20 percent in 2009., while 35 percent believe the Commonwealth of Puerto Rico should be a state, but 40 percent do not and 25 percent are not sure.