A Republican senator from Utah is set to lose the party's nomination on Saturday and become a high-profile casualty of the Tea Party movement. After 18 years representing the western state, Bob Bennett, 76, faces the wrath of party activists who think he has drifted too far to the middle ground and become too identified with broken central government. He will be opposed at caucuses by eight opponents all to his Right politically who have all sought the endorsement of the state's active Tea Party groups. Under Utah's quirky rules, without 40 per cent of the vote at Saturday's party...