Good Sunday morning. Today, marks 100 days until the midterm elections. At stake, control of Congress.Will the war in Iran and its impact on the economy hurt Republicans' chances of holding on to power. Can Democrats flip the House and Senate even as a fight wages within the party over its future. Joining me for a look at all of it, NBC News chief data analyst Steve Kornacki.Steve, good morning. Thank you for being here. So much we're watching with 100 days to go.>> Yeah, the countdown really is on. Let's p ...