There are three main reasons Obama will win in Las Vegas:

1. The powerful culinary union is supporting him.
2. There are "remote" caucus locations set up on the Las Vegas strip so that those who have no chance of attending the caucus in their own neighborhoods can attend, giving an unfair advantage to Obama.
3. The Obama campaign is airing anti-Hillary ads in Spanish, telling people she is not supportive of Hispanics.

I'll give props to the Obama organization for marshalling and deploying resources. It's been reported that Obama had recently expanded his Nevada organization and now has headquarters in all 50 states, something that is almost unheard of in primary politics.
Obama is also raising a ton of money. When someone can raise 500,000 online in a matter of hours, you know there is some sort of grassroots movement happening.
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