By an overwhelming margin, American voters say consumers should have the right to know if their food is genetically modified, with 89 percent in support of mandatory GMO labeling, according to a new national poll. Nearly the same number of consumers would like to see the labels in an easy to read format.

The survey by the Mellman Group confirms previous polls that found heavy support for GMO labeling. The new poll shows labeling is supported by large majorities of Democrats, Republicans and independents, as well as people with favorable or unfavorable views of GMOs. Overall, 77 percent of respondents were strongly in favor of labeling.

“Everyone needs information to make informed food choices, not just those who have smart phones,” said Wenonah Hauter, executive director of Food & Water Watch. “There is no acceptable substitute for mandatory on-package labeling of GMO food.”

The poll, commissioned by a coalition of consumer and environmental groups, comes at a timely moment. In Congress, some lawmakers want to add a provision to the omnibus spending bill that would block states from requiring GMO labels for produce and processed food, as would the so-called DARK Act passed by the House last summer.