A Public Policy Polling/Clean and Prosperous America survey of 759 registered Texas voters showed Cruz is ahead of Allred by 47 percent to 46. In a previous August poll, the incumbent led Allred by 2 points (47 percent to 45). The poll was carried out on September 25-26. The results have a margin of error of plus or minus 3.5 percent.

The polarizing conservative has been softening his edges ahead of another closer-than-expected reelection campaign.

Ted Cruz is back on the lead in the Texas Senate race after a recent survey showed his challenger, Democratic Rep. Colin Allred, ahead for the first time. However, the incumbent's lead is still razor thin and the contest remains fluid a little over a month before Texans head to the polls.