President Obama’s approval rating has plummeted to 45 percent amid a series of controversies in recent weeks, according to a poll released Monday.

A new CNN/ORC International survey found that Obama’s approval rating has fallen eight percentage points in the past month, as revelations about U.S. surveillance programs, the Internal Revenue Service’s targeting of conservative groups and the secret monitoring of journalists by the Department of Justice dominate headlines. They represent Obama’s lowest marks in the poll during the past year and a half — and a steep decline from his 53 percent approval rating just last month.

Perhaps even more troubling for the president, half of those surveyed said they no longer find him “honest or trustworthy.”

And such sentiment is extending into Obama’s own political base.

“The drop in Obama’s support is fueled by a dramatic 17-point decline over the past month among people under 30, who, along with black Americans, had been the most loyal part of the Obama coalition,” said CNN Polling Director Keating Holland.

The survey of more than 1,000 Americans was conducted between June 11 and June 13.

Recent revelations about the National Security Agency’s phone and Internet surveillance programs are also stoking dissatisfaction with Obama.

Six in 10 said the president is mishandling the surveillance of U.S. citizens, though more approve of the seizing of Internet data than phone records. And 43 percent of those surveyed said Obama hasn’t effectively balanced the protection of civil liberties and national security.

“That’s roughly the same reaction that the public had to the [George W.] Bush administration in 2006 when the details of a similar program to gather phone records were made public,” Holland said.