Sen. Ted Cruz is barely hanging on to a 3-point lead over Democratic Rep. Beto O’Rourke in a Texas Senate contest that is quickly becoming one of the most watched races in the 2018 elections.

According to a new Quinnipiac poll, Cruz, R-Texas, holds a 3-point lead (47 percent-44 percent) over his Democratic challenger, who is being buoyed by a wave of independent support. That’s within the 3.6 percentage point margin of error.