Washington ? Veteran Sen. John McCain sailed to nomination for a fifth term Tuesday over an Arizona challenger with tea party support, but big-spending political novice Rick Scott beat an insider in Florida’s Republican gubernatorial primary as voters split on the merits of establishment candidates vs. outsiders.

In other big-name races, Rep. Kendrick Meek prevailed for Florida’s Senate Democratic nomination over upstart Jeff Greene, and Sen. Lisa Murkowski of Alaska counted on voters to reward political experience as she faced a spirited Republican primary challenge 10 weeks before the general election.

Nominating contests in five states — Vermont also was voting, and Oklahoma held GOP runoffs — highlighted dominant themes of this unpredictable election year, including anti-establishment anger and tea party challenges from the right. But the early results indicated that if there was a single pattern to the night, it may have been the lack of one.