CBS News – In Las Vegas, it’s legal to bet on a horse race, but not the race for presidency. That could change if state Senator Tick Segerblom has his way. Segerblom said he wants a law allowing Nevada casinos to make room for people who want to pick win, place or show on America’s top political job, “especially when you have an industry like we have here in Nevada. We bet on everything.” Turns out his idea isn’t so new after all. In the early 1900s gambling on candidates was illegal, but Americans gathered outdoors in New York City…