Arizona - U.S. Sen. John McCain beat back a primary challenge Tuesday from a Republican tea party activist to win the right to seek a sixth Senate term in November in a race that has been inundated with questions about GOP presidential candidate Donald Trump.

The 2008 GOP presidential nominee easily defeated former state Sen. Kelli Ward and two other Republicans.

He faces a tough Democratic challenge in the November general election from U.S. Rep. Ann Kirkpatrick. She advanced Tuesday after facing only a write-in opponent in the primary.

McCain, who turned 80 on Monday, had been campaigning hard, rallying campaign workers and making get-out-the-vote stops in keeping his vow not to take the primary for granted.... Read More: VIN