According to a USC Dornsife/Los Angeles Times survey, 52 percent of voters want the $68-billion project stopped. Forty-three percent of voters say it should move forward.
The findings are similar to a poll conducted in 2012. State rail officials argued that public support would increase as improvements were made to the plan, but that support hasn't materialized.
The project is a year behind schedule. It is also facing multiple lawsuits.
The Associated Press contributed to this report.