American voters support a federal ban on cell phone use while driving, even while using a “hands-free” device, according to a Quinnipiac University national poll released this week.

The poll showed that 63 percent of respondents favored a ban.

“In a country narrowly split on most questions, there is unusual agreement that it is a good idea to ban driving while talking on a cell phone,” said Peter A. Brown, assistant director of the Quinnipiac University Polling Institute, “even when a driver is using a ”˜hands-free device.’

The US administration, citing the dangers of driver distraction, has indicated it may push Congress for a ban on mobile phones in cars. Such a ban would also apply to hands-free devices.

Democrats supported a ban by a 70-to-28 margin, while 56 percent of Republicans were in favor.

Seventy percent of women backed the idea, while 55 percent of men supported it. The poll also showed that voters over the age of 55 were more in favor of a ban than younger voters.

Ten percent of voters admitted they talk on a mobile phone while driving “very often,” while 21 percent said “sometimes,” 38 percent said “rarely” and 31 percent said “never.”

A mobile phone ban would increase highway safety “a great deal,” 49 percent of voters said, while 31 percent said it would improve safety “some.”

Quinnipiac University surveyed 2,424 registered voters nationwide in the second week of November. The margin of error in the survey was plus or minus 2 percentage points.

The Quinnipiac University Poll conducts public opinion surveys in the states of Pennsylvania, New York, New Jersey, Connecticut, Florida, Ohio and across the US.Quinnipiac is located in Hamden, Connecticut, in the northeastern US.