A state-by-state breakdown shows most politically split areas in the country–and where campaigners could therefore target.

The US has the third-largest population in the world, but nearly a third of America's 340 million residents live in just ...

The U.S. population is spread out among 3.8 million square miles across 50 states, yet nearly one-third of Americans live in just three states: California, Texas and New York. New York City alone has ...

The U.S. is in peak flu season, as the Centers for Disease Control (CDC) says "seasonal influenza activity remains elevated and continues to increase across the country." Case counts vary by state, ...

Not since the 1800s have so many states tried to redraw U.S. House district boundaries without a new Census.

A battle between Texas Republicans and California Democrats to bolster their party’s advantage in the U.S. House has led politicians in other states to consider ways they, too, could leverage partisan ...