Conservative Republican Assemblywoman Michele Fiore of Las Vegas invited a few extra guests Tuesday night to the regular pasta dinners she has for constituents. The meal was the last official stop for a group of young conservatives traveling the country — visiting battleground states such as Nevada first — as part of a $1 million campaign to get the national Republican Party to support gay marriage in its party platform in 2016. The group has been to Iowa and New Hampshire. South Carolina is the next stop. Nevada already is ahead of the curve, said Tyler Deaton, campaign manager of...