All eyes on Texas Senate and Georgia governor’s races Video

  • Now Playing: Torrential rain continues in Central Texas after days of flooding


  • Now Playing: Trump campaigns for Cruz




  • Now Playing: All eyes on Texas Senate and Georgia governor’s races




  • Now Playing: Trump to hold 3 rallies today




  • Now Playing: Rise of the female campaign manager




  • Now Playing: Trump makes midterm push in red states where his approval is highest




  • Now Playing: Tight races will decide balance of power in Congress




  • Now Playing: Inside the midterm battle for Pennsylvania’s 1st Congressional District




  • Now Playing: Matt Dowd: If O’Rourke wins Texas, ‘he becomes the biggest rock star in the country’




  • Now Playing: Mary Bruce: Dems will put Trump ‘under an intense microscope’ if they win the House




  • Now Playing: Jonathan Karl: Trump’s ‘counting on fear and loathing to rally’ GOP is a ‘gamble’




  • Now Playing: Pierre Thomas: Disinformation on social media still ‘an ongoing threat’




  • Now Playing: ABC/WaPo poll: Dems hold 8-point lead over GOP nationwide in House races




  • Now Playing: Sen. Van Hollen: Dems have ‘narrow path to a majority’ despite difficult Senate map




  • Now Playing: RNC chair: ‘Obviously we have headwinds’ but GOP can keep House, Senate majorities




  • Now Playing: Key House and Senate races to watch




  • Now Playing: Trump rallies in red states, where his approval ratings are high




  • Now Playing: Why it Matters: Here’s what’s inspiring these Americans to vote




  • Now Playing: More than 30 million Americans have cast early votes




  • Now Playing: Trump and Obama make final push before midterm elections