The Houston Livestock Show and Rodeo is one of the biggest rodeos in the world. Rodeo athletes come from all over the U.S. and Canada to compete for some of the biggest cash purses in the sport. And it's not just cowboys in the ring. Cowgirls compete in the sport of barrel racing, where they trace a looping pattern on horseback against the clock.
With Jeb Bush signaling he's likely to run for president in 2016, it's another sign that the presidential announcement season is underway. Here's a look at who has jumped in the race early and what to expect in the coming months.
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