Democratic strategist Simon Rosenberg has prominently argued that it’s premature to freak out about Donald Trump’s lead in the polls. Rosenberg’s case is partly that the Democratic Party is strong and has been winning lots of elections lately, as readers of his “Hopium Chronicles” well know. But there’s another, less-appreciated side to his analysis: That the people who make ads and run campaigns and do politics for a living know that Trump’s unfathomably high pile-up of negatives is, in the end, probably insurmountable for him. So we chatted with Rosenberg about this side of his theory — and about why the Biden team appears quietly confident of victory. Learn more about your ad choices. Visit megaphone.fm/adchoices