Amid raucous debate, Nevada Republican Party conventioneers on Saturday stripped opposition to gay marriage and abortion from the party platform and endorsed Gov. Brian Sandoval for governor in the June 10 primary despite misgivings by conservatives, his criticism of the process and his absence from the meeting. The convention also backed Sue Lowden for lieutenant governor over state Sen. Mark Hutchison, R-Las Vegas, who was endorsed by Sandoval and who also spurned the party’s move to endorse candidates before the primary. A nominating committee proposed more than three dozen pre-primary endorsements, although the panel decided against recommending anybody in the...