NEW ORLEANS (October 28, 2012)--Madonna drew boos and several concertgoers walked out 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?"

"I don't care who you vote for as long as you vote for Obama,” she said.

Drawing boos in touting Obama over Republican Mitt Romney, she said, "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.