The next presidential election is still a few years away, but Arizona's senators could be contenders in a wide-open Democratic primary race.

The next presidential election is still a few years away, but Arizona's senators could be contenders in a wide-open Democratic primary race.

Arizona's U.S. Sens. Mark Kelly and Ruben Gallego are generating buzz as potential 2028 presidential candidates. Both senators have won tough races in Arizona and are active on key issues, but ...