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What will it take for Democrats to win the Senate?

2018-09-11 2,565 531 400,926 YouTube

In order for Democrats to take the U.S. Senate in November, they will have to win Republican-held seats and defend Democratic-held seats in states President Trump won in 2016. Dan Balz, chief correspondent covering politics for the Washington Post, speaks to CBSN's "Red & Blue" about what Democrats will have to do to pull off the victory.