ANCHORAGE, Alaska (AP) — Former state Attorney General Dan Sullivan became the latest mainstream Republican to turn back a tea party challenger, winning the Alaska GOP primary to become his party's candidate to take on U.S. Sen. Mark Begich in the fall. Miller released a statement early Wednesday morning, saying it seemed unlikely he would be able to close the gap on Sullivan with the remaining absentee ballots and outstanding precincts. The Alaska GOP Senate race mirrored national trends, with tea party conservatives trying to knock out mainstream Republicans. Tuesday morning, Sullivan was out with supporters — including his wife, three teenage daughters and niece — waving signs along a busy Anchorage street and looking relaxed. Former Gov.