ABC News' Ann Compton: As he headed to the West Wing for a private lunch with President Obama, DNC Chairman Tim Kaine interrupted his lobbying for health care reform and called the issue "great politics." “The message really is, you know, its one of these wonderful instances where we can do something great that you will remember the rest of your life, having been a part of. And it’s also great politics.” Kaine told ABC News in an interview he is optimistic and encouraged about a vote later this week to pass reform in the House, although he would not predict a final count. With Capitol Hill swirling with demonstrations by Tea Party activists and opponents of the Democrats’ bill, Kaine actually challenged Republicans to make reform an issue in Congressional races this fall. “I would encourage them to do that. I think they should run campaigns with bumpers that say bring back pre-existing conditions. Or kids that are on parents’ policies should now be kicked back off of them,” Kaine said. The DNC chairman, who is a longtime friend and former Harvard Law School classmate of President Obama, told ABC News today’s luncheon is to review the health care vote and the landscape for the 2010 elections. He doubted he would be offered a job in the administration now that his term as Governor of Virginia is over. “Being out there and being an advocate and champion of this administration is about as much fun as a human being can have.” The chairman added, ” This definitely is not a conversation about me doing anything else, at least as far as I know.” Then he headed to the President’s private dining room, just off the Oval Office.