Obama pulls all-nighter in Vegas, gives Katy Perry 'best birthday ever'

President Obama was up all night, but at least he was in Las Vegas. 

"We are pulling an all-nighter. No sleep," Obama told the crowd at an event Wednesday night. "And if you're not going to sleep you might as well be in Vegas."

Obama is visiting eight states in two days on a 48-hour "campaign extravaganza," as his campaign calls it. On Thursday morning, he is in Tampa, but on Wednesday night he was in Vegas, at an event where pop singer Katy Perry performed. Perry dressed in a skintight white dress that mimicked a ballot with the Democratic ticket checked off.

"I've gotten to know Katy Perry and she is a wonderful young lady," Obama said in his speech, also referring to Perry's guest, her grandma.

Thursday is also the singer's birthday, and Perry tweeted in the early morning hours that it was already the "Best. birthday. ever."

So tonight was a great night! The PRESIDENT gave grandma and I unforgettable shout outs & now I am officially 28! Best. birthday. ever.

— Katy Perry (@katyperry) October 25, 2012

Obama's Twitter account is live-tweeting the "extravaganza" in an effort to up the momentum of the president's swing-state tour. According to tweets, Obama was greeted by casino workers during a stop at the Bellagio casino.

Amazing/surreal moment in Vegas: POTUS stops to talk to casino workers. Means to just shake a few hands, but word gets out...

— Barack Obama (@BarackObama) October 25, 2012

The President winds up sticking around, gives amazing speech about hard work. Casino staff start spontaneous chant of "four more years."

— Barack Obama (@BarackObama) October 25, 2012

According to the Washington Post, the president only visited the cafeteria at the Bellagio and never saw the casino floor.

He will also be in Virginia, Illinois, and Ohio on Thursday.

Beat the sun to Tampa. Looking forward to day two of our marathon trip. -bo

— Barack Obama (@BarackObama) October 25, 2012

The first lady is crossing the country in the opposite direction and will also be on the West Coast on Thursday for a fundraiser, and to film her first appearance on Jimmy Kimmel's late night talk show. She will also be in Vegas for a campaign event on Friday.

Will and Jada Pinkett Smith are hosting a fundraising lunch for Michelle Obama at their home in Los Angeles on Thursday. Salma Hayek and other celebrities are also expected to attend.

The entrance fee is $2,500 per person, and the money goes to the joint fundraising committee for the president's campaign and the Democratic National Committee.

Jada Pinkett Smith wrote on her Facebook page that the event is "one of the most successful fundraisers for the first lady EVER!"

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