TRENTON, N.J. (AP) - New Jersey Gov. Chris Christie has the worst approval rating for any governor in states surveyed by one pollster in more than 20 years.

A Quinnipiac University poll published Wednesday shows that 15 percent of voters approve of the Republican's job performance. Eighty-one percent disapprove.

The university says it's the worst gubernatorial approval rating surveyed by the poll in more than two decades. Christie's approval fell three points from 18 percent in the poll's May survey.

The survey also showed that Democrat Phil Murphy is leading Republican Lt. Gov. Kim Guadagno 55 percent to 26 percent in a head-to-head matchup ahead of November's election to succeed the term-limited Christie.

The poll surveyed 1,103 voters and has a margin of error of plus or minus 3.8 points.

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