of Columbia that allow registered voters to indicate a party preference when registering to vote. 20 states do not include party preference with voter registration. The party affiliations in the party control table are obtained from state party registration figures where indicated. Only Wyoming has a majority of registered voters identifying themselves as Republicans; only one state has a majority of registered voters identifying themselves as Democrats: Maryland (since 2010, Louisiana and Pennsylvania have seen their Democratic majority slip to pluralities, while Florida, Kentucky, and West Virginia now have Republican pluralities). For those states that do not allow for registration by party, Gallup's annual polling of voter party identification by state is the next best metric of party strength in the U.S. states. The partisan figures in the table for the 20 states that don't register voters by party come from Gallup's poll. U.S. state party control as of Party strength by region Local and regional political circumstances often influence party strength. State government Presidential election results and congressional delegations Results of the 2020 Presidential election: Current standings in the U.S. Senate and in the U.S. House as of the 117th Congress: Historical party strength Number of state legislatures controlled by each party. State governorships controlled by each party. State government full or split control, by party. Graphical summary References