Elizabeth Warren greets supporters in Las Vegas before Nevada caucus Democratic presidential candidate Elizabeth Warren meets with supporters in Las Vegas two days ahead of the Nevada caucuses, and renews her criticism of former New York Mayor Michael Bloomberg. "Mayor Bloomberg thinks he can buy this election, he's dumped $400 million into it so far and skipped the democracy part of it — shaking hands, meeting people, learning about their issues," the Massachusetts senator tells reporters. IMAGES AND SOUNDBITES