Montag vs. Montag: The Presidential Election

Hills star Heidi and her sister disagree on more than just boyfriend Spencer Pratt

Heidi Montag’s love for John McCain is not a family affair.

Montag's sister, Holly, says she's rooting for Barack Obama.

"I'm totally for Obama," Holly said at last night's anniversary party for One Sunset restaurant in L.A. "Heidi's McCain, but I'm for Obama…I loved Obama before he was even running."

The sisters do get into political face-offs. "I actually studied political science, so we definitely have a lot of conversations about it," Holly said. "But I'm always right."

Spoken like a true Montag.

As for fellow Hills star Lauren Conrad's maybe-boyfriend Kyle Howard...

He's also voting for Obama. “I feel like the vibe from the other side is just a bit more stagnant and more of the same,” the My Boys actor said. “I feel like if we need to do anything right now, it’s try a little bit of change. The chances of us doing that are way better with Barack.”

No doubt Howard and Conrad gave us more reason to think they’re an item last night. Not only were they sitting at the same table for most of the evening, but by the end of the party they had been spotted making out more than once.

Also at the Stoli Elit-hosted party, which featured contortionists dressed like Raggedy Ann, were Lance Bass, Kim Kardashian, David Arquette and Matthew Perry.

—Reporting by Dahvi Shira