In an election with control of the Senate at stake, Republicans were counting on a win in GOP-friendly Missouri. Democrats' Senate campaign committee has sought to seize the moment, announcing $3.5 million in new advertising last week. The shifting environment in Missouri comes partly because Democrats are pulling back in battleground Ohio, where incumbent GOP Sen. Many Republicans are concerned about North Carolina's GOP Sen. Richard Burr, but many still sound confident that Blunt will ultimately prevail. "Roy Blunt has been to all 115 counties in Missouri an unprecedented three times since declaring for Senate.

Source: ABC News September 21, 2016 18:13 UTC