The number of Floridians who approve of Sen. Marco Rubio Marco Antonio RubioSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Florida senators pushing to keep Daylight Savings Time during pandemic Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll MORE's (R-Fla.) job performance has fallen to an all-time low, according to a new Quinnipiac University poll out Tuesday.

That poll pegged Rubio's approval rating at just 38 percent — down 8 points from the last time Quinnipiac surveyed Florida voters' approval of the junior senator in July 2016.

That's also down sharply from his all-time high of 57 percent approval in August 2015, according to Quinnipiac.

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Fifty-three percent of Florida voters disapprove of the job Rubio is doing in the Senate, according to the most recent survey.

Rubio was criticized following a deadly shooting at Marjory Stoneman Douglas High School in Parkland, Fla., earlier this month for his stance on gun control reform.

He appeared at a CNN town hall last week with students, parents and community members in Parkland, where he was heckled for refusing to support a ban on assault weapons and for declining to say whether he would stop taking campaign contributions from the National Rifle Association (NRA).

White men and Republicans are the only groups to approve of Rubio's job performance, according to the Quinnipiac poll. And even among GOP voters, his approval rating is lackluster – 65 percent approve, while 24 percent disapprove.

Approval of Florida Gov. Rick Scott (R), however, hit an all-time high in the Quinnipiac poll.

Forty-nine percent of Florida voters approve of the job Scott is doing in Tallahassee, while 40 disapprove. That approval rating is well above his all-time low of 29 percent in May 2011, according to Quinnipiac.

Scott has joined other lawmakers in Florida in recent days in defying the NRA and calling for a plan to raise the minimum age for purchasing any gun from 18 to 21, as well as for making it "virtually impossible for anyone who has mental issues to use a gun."

Scott was invited to the CNN town hall last week, but declined to attend.

The Quinnipiac poll surveyed 1,156 Florida voters from Feb. 23-26. Its margin of error is 3.6 percentage points.