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Madonna drew boos and triggered a walkout by several concert goers after she touted President Barack Obama on her MDNA Tour in New Orleans.
The Material Girl asked during Saturday night's performance: "Who's registered to vote?" She added: "I don't care who you vote for as long as you vote for Obama."
Drawing boos in touting Obama over Republican Mitt Romney, Madonna followed: "Seriously, I don't care who you vote for ... Do not take this privilege for granted. Go vote."
Madonna is often outspoken. Some Colorado fans, mindful of a mass shooting there, complained she used a fake gun to shoot a masked gunman in a recent concert act in Denver.
A Madonna concert in Paris in July drew ire when a video showed a swastika on a politician's forehead.
