Donald Trump's unpopularity has reached an all-time high across a wide range of voter demographics, according to a new survey released Thursday.

According to the latest Associated Press-GfK poll, seven in 10 U.S. voters currently hold an unfavorable view of the Republican presidential front-runner. The trend reaches across men, women, moderates, liberals, millennials, seniors and minority voters.

Despite winning a handful of Southern states between the South Carolina primary on Feb. 20 and Super Tuesday on March 15, the same survey finds that nearly 70 percent of voters in the South view him negatively. Furthermore, 55 percent of white voters who do not hold a college degree — a group that belongs to Trump's base — indicated they do not view the billionaire in a positive light.

"He's at risk of having the nomination denied to him because grass-roots party activists fear he's so widely disliked that he can't possibly win," former White House press secretary Ari Fleischer told the AP.

Trump's penchant for insulting his opponents also seems to be taking a toll on his image among most voters. According to the survey, "large majorities" of voters across several demographics "would not describe [Trump] as civil, compassionate or likable."

Ted Cruz also has net-negative favorability rating, but his rating remains far lower than Trump's. Fifty-five percent of voters view the Texas senator negatively, while 55 percent hold unfavorable views of Cruz's and Trump's Democratic opponent, Hillary Clinton.

The Associated Press-GfK survey of 1,076 adults was conducted March 31-April 4. Results contain a margin of error of plus or minus 3.3 percent.