Sens. Ted Cruz (R-Tex.) left, and Mike Lee (R-Utah) at the Capitol on Sept. 19. (J. Scott Applewhite/AP)

The two highest-profile leaders of the GOP’s Defund Obamacare effort have taken a significant hit in the polls.

A new Gallup poll shows Sen. Ted Cruz (R-Tex.) is viewed favorably by 26 percent of Americans, versus 36 percent who view him unfavorably.

In June, a less-well-known Cruz was still in positive territory, with a 24 percent favorable rating and an 18 percent unfavorable rating. In other words, his unfavorable rating has doubled, while his favorable rating has risen just two points.