Support for new restrictions on guns has surged in the weeks since the mass shooting at a Parkland, Fla., high school, a new ABC News/Washington Post poll found.

Sixty-two percent of respondents in the poll said they support a national ban on selling assault weapons, up from 50 percent in the same poll in mid-February. It’s the highest level of support in the poll for such a ban since January 2011.

Even more respondents were in favor of other gun measures. Seventy-two percent of respondents said they supported raising the legal age to buy rifles and shotguns to 21, and 85 percent backed so-called red flag measures that allow police to take away guns from individuals deemed to be a danger to themselves or others.

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Fifty-seven percent of respondents said that enacting new laws aimed at preventing gun violence is more important than protecting gun rights.

The poll also found that 71 percent of Americans believe lawmakers aren’t doing enough to prevent gun violence, and 59 percent think President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE isn’t doing enough.

The debate over gun control has been jump-started by students from Parkland who have become advocates for tougher laws since the shooting at their school left 17 people dead. The students have won broad attention on social and traditional media, amplifying their message. They also organized a march to end gun violence in Washington, D.C., that drew hundreds of thousands of people.

The ABC News/Washington Post poll conducted phone interviews with 1,002 adults from April 8-11. The survey has a margin of error of 3.5 percentage points.