Article Photos: Guns, climate, gays missing in presidential race



A young supporter holds up a U.S. flag during a campaign event for President Barack Obama at Doolittle Park, Wednesday, Oct. 24, 2012, in Las Vegas. (AP Photo/Pablo Martinez Monsivais)

A young supporter holds up a U.S. flag during a campaign event for President Barack Obama at Doolittle Park, Wednesday, Oct. 24, 2012, in Las Vegas. (AP Photo/Pablo Martinez Monsivais)