Democrats are expected to get more bad news when the census data is released Tuesday.

Republicans netted 63 House seats in the 2010 election, and now several heavily Democratic states are projected to lose congressional seats under reapportionment data from the 2010 census.

Population trends over the past decade have seen Democratic states in the Northeast and industrial Midwest lose inhabitants, while Republican-leaning states in the South and Southwest have gained residents.

The question is which blue states will be hit the hardest.

The latest apportionment projections from Election Data Services show the biggest gainers next year will be the red-leaning Texas and Florida, while the biggest losers are likely to be New York and Ohio. The Lone Star State will gain at least three seats and is on the cusp of gaining a fourth. Florida is likely to gain at least two new seats, and the addition of a third is possible, depending on the final population figures.

Ohio, a presidential bellwether, is likely to lose two seats, while New York will lose one and could lose a second.

Six other states are projected to gain seats: Arizona, Nevada, Georgia, South Carolina, Utah and Washington state.

The other states projected to lose: Illinois, New Jersey, Iowa, Michigan, Pennsylvania, Louisiana, Missouri and Massachusetts.

The final numbers also stand to shift the balance in the Electoral College, potentially delivering a blow to President Obama's reelection prospects. Since electoral votes are awarded based on the size of a state's congressional delegation, heavily Republican Texas stands to gain as many as four electoral votes ahead of 2012. In a tight presidential contest, a small handful of electoral votes could make all the difference. Of the states projected to lose seats, Obama won seven in 2008.

On top of the population shifts in traditionally Democratic or swing states, Republicans saw massive gains on the state legislative level in 2010, leaving them largely in control of the redistricting process in key states like Texas and Pennsylvania.

Tuesday won't provide a full picture of the redistricting process, however. It won't be until early next spring when the Census Bureau releases its detailed state-by-state population data that it's shown where the population gain or loss has occurred within states and districts, which could make it harder to gerrymander some maps.