June 15, 2016 8:46 AM EDT

Negative views of Donald Trump have hit a campaign high, according to a new favorabillity survey.

The Washington Post-ABC News poll finds 70% of Americans have an unfavorable view of the Republican presidential nominee—including some 56% who feel “strongly” unfavorable.

It’s a 10-point shift from last month, when Trump had hit just 60% unfavorable views. Since then, he officially became his party’s nominee and controversially suggested a judge overseeing a lawsuit over his university might be biased because of his Mexican heritage.

The survey was conducted before Sunday’s deadly attack on a nightclub in Orlando—and thus before his tweeted response to the massacre, which was widely criticized for being insensitive and self-aggrandizing.

Democratic presidential nominee Hillary Clinton also received some of her worst ratings in more than two decades, according to the new poll, with some 55% of Americans viewing the former Secretary of State as unfavorable. Worryingly for Clinton, one in four Democrats expressed unfavorable opinions towards her.

Over a third (34%) of Republicans expressed unfavorable views of Trump, up from 28% in May.

Polling was conducted between June 8-12, by the Washington Post-ABC News among a random sample of 1000 American adults, with margin of error of plus or minus 3.5 percentage points.

Contact us at letters@time.com.

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