New Jersey Gov. Chris Christie’s job approval rating is slightly down since the summer, and his out-of-state travel and the speculation around a possible 2016 presidential run, once assets, might be a reason for the decrease.

According to the Monmouth University/Ashbury Park Press poll, Christie has a 46 percent job approval rating, down from 50 percent in June. A slight majority (52 percent) also believes Christie’s recent trip to Mexico was “mainly to burnish his presidential prospects” and not to build trade relations.

“In the past, buzz about Christie’s presidential potential was a source of pride for most New Jerseyans,” said Patrick Murray, director of the Monmouth University Polling Institute. “These findings suggest that some of his constituents are starting to resent his time out of state.”

The poll also found residents are ready for Bridgegate to end. Even though 60 percent said they don’t believe Christie has been completely honest about what he knows about the closing of George Washington Bridge lanes ordered by his staff last year, 59 percent said the special joint legislative committee looking into it should end its investigation compared with 34 percent who say it should continue.

“Few people think Christie has been forthcoming about Bridgegate, but they don’t believe that the motives of Democratic legislators leading the investigation are all that pure either,” Murray said. “This seems to have made the issue a wash for the governor.”