Protesters attend a rally at the Federal Courthouse in Fort Lauderdale, Fla., to demand government action on firearms, on Saturday, Feb. 17, 2018. Their call to action is a response the massacre at Marjory Stoneman Douglas High School in Parkland, Fla. (Mike Stocker/Sun Sentinel/TNS via Getty Images)

Support for stricter gun laws has spiked to the highest level since 1993, and almost two-thirds say government and society can take action to prevent future mass shootings, according to a new CNN poll conducted by SSRS.

The findings suggest the school shooting in Parkland, Florida, has shifted public opinion on gun laws in a way other recent mass shootings have not.

Overall, 70% now say they back stricter gun laws, up from 52% who said so in an October poll not long after a mass shooting in Las Vegas killed 58 people. Just 27% oppose stricter laws. Support for stronger gun laws has not been that high in CNN polling since a December 1993 survey conducted just after the Brady Bill was signed into law.

Public support for stronger gun laws has fluctuated over the years, peaking at 70% backing for stronger laws in 1993 and in the new poll and bottoming out at 44% support in a CNN/ORC poll in September 2014. Bumps in support for tighter laws following mass shootings have rarely lasted, but they have also rarely been as large as the shift seen in this poll.

The new poll also finds a deepening intensity of support for stronger gun laws. A majority, or 52%, say they “strongly” favor stricter gun laws, well above the previous high mark of 37% in polling back to 2013. Strong support outpaces strong opposition by a nearly four-to-one margin, a massive increase compared with the 36% who were strongly in favor of such a move and 27% who strongly opposed the idea in the October survey.

Overall support for stricter laws includes a majority of those who live in gun-owning households (57%) as well as majorities across gender, race and age categories. Nearly all Democrats (93%) back stricter laws, as do a majority of independents (64%) and a plurality of Republicans (49% vs. 46% who oppose them).

At the same time, an increasing share say they are very or somewhat worried they or a family member will become a victim of gun violence. Almost six in 10 say so now (57%), compared with 44% in June 2016 after a mass shooting in Orlando. Worries now are higher among parents of children under 18, of which 62% say they are worried vs. 55% among non-parents. Among those who are at least somewhat worried about becoming a victim of gun violence, 80% back stronger gun laws; that slides to 56% among those expressing less concern.

There is widespread support for several specific changes to gun laws, including 87% who back laws to prevent convicted felons and those with mental health problems from owning guns; 71% who support preventing people under age 21 from buying any type of gun; 63% who support a ban on the sale and possession of high-capacity or extended ammunition magazines (up from 54% in October, a new high in CNN polling); and 57% who back a ban on the manufacture, sale and possession of rifles capable of semi-automatic fire, such as the AR-15, the same style as was used in both the Parkland and Las Vegas shootings (up from 49% in October).

Support for raising the age at which a person can purchase any type of gun – an idea supported by some prominent Republicans – crosses party lines (86% of Democrats, 67% of independents and 61% of Republicans back that change), as does support for keeping guns away from convicted felons and those with mental health problems (90% of Democrats and Republicans favor that, along with 84% of independents). There is also broad cross-party opposition to an outright ban on gun ownership (93% of Republicans, 87% of independents and 83% of Democrats oppose that idea).