Democratic group launches ad campaign to help flip control of Congress in midterm elections

A Democratic group that previously focused on presidential races is wading into more than a dozen House and Senate contests across the country. American Bridge 21st Century is beginning its $50 million advertising campaign on Tuesday. Many of the races are on Republican turf as Democrats try to flip control of Congress. The effort adds financial firepower to the midterms at a time when Democrats have struggled to match Republican fundraising and President Donald Trump's redistricting tilts the m...