This table reflects changes in the distribution of seats in the House of Representatives and Electoral College based on the Apportionment data released by the Census Bureau on 21 December 2010.

There are 100 Senate Seats, 435 House Seats, and 538 Electors.

States receive one elector for each U.S. Senator (all states have 2 Senators) and one elector for each U.S. Representative. States have 1 or more Representatives based on population. Since the District of Columbia is not a state, it has no U.S. Senators and no apportionment population for allocating U.S. Representatives. The 23rd Amendment to the United States Constitution provides the District of Columbia with 3 electors-- number of Electors of the least populous state.

A state's resident population consists of those "usually resident" in that state-- that is, where they live most of the time. A state's apportionment population is its resident population plus the state's overseas U.S. military and federal civilian employees (and their dependents living with them).