ABC News’ Rick Klein reports: Regardless of the outcome of next Tuesday’s election, President Obama will be facing a much different political landscape – and a series of choices about how to handle Democrats’ diminished influence in Washington. Simon Rosenberg, a veteran strategist who is president of the centrist New Democrat Network, told us on ABC’s “Top Line” that Obama should take a page out of Ronald Reagan’s communications playbook. “They're going to be facing a very different city. And I would argue that [if] Barack would have to do one important thing, President Obama, is that he's got to learn from Reagan. At the end of the day, the most powerful tool in the toolbox of the president is a big argument about where he wants to take the country.” “And I think what we've seen with Obama's argument is that the sum hasn’t been greater than the parts,” he said. “Even Barack said at one point, ‘I've done some things people don't even know about’ — come on, you're the most powerful man in the world, why not? So I think the challenge for Obama now is to create a more compelling argument.” As for the prospects next week, Rosenberg offered up an analogy that San Francisco’s own House Speaker Nancy Pelosi may embrace. “[Obama] is going to do his best and I think this is the whole point, you never give up in politics. I mean, look at the Giants. Somebody tweeted last night that I wish the Democrats were more like the Giants.” Watch the full discussion with Simon Rosenberg HERE. We also caught up with Bob Cusack, managing editor of The Hill, about the president’s interview with Jon Stewart last night, plus the parties’ closing arguments. Watch that portion of “Top Line” HERE.