The former Navajo president seeks to represent a district with 14 of Arizona's 22 tribes in Congress. But demographics could be stacked against him.

On a national level, households earning up to $160,000 are considered middle class. Here's what the middle class is earning ...

While it isn’t known how many citizens are registered firearm owners, a large number of them have been manufactured in Texas.

Arizona is a battleground state in the presidential election this year. Here's where the betting odds stand for Kamala Harris and Donald Trump.

Cosmological data suggest unexpected masses for neutrinos, including the possibility of zero or negative mass.