The polls find incumbent Texas Republican Senator Ted Cruz with a lead of 50 percent to 40 percent over Democratic Representative Beto O'Rourke, and Florida Democratic Senator Bill Nelson behind Republican challenger Rick Scott, the state's governor, among likely voters by a margin of 41 percent to 46 percent.
Democrats need to gain two seats for a majority in the Senate, which is currently divided 51-49 percent in favor of Republicans. The race in Texas has been considered a prime pickup opportunity for Democrats, along with contests in Nevada and Arizona.
Nelson is a prime Republican target, along with other Democratic senators in states that President Donald Trump won in 2016. They include Indiana Senator Joe Donnelly; West Virginia Senator Joe Manchin; Missouri Senator Claire McCaskill; Montana Senator Jon Tester ; and North Dakota Senator Heidi Heitkamp.