This decline in Trump's approval rating among Republicans could signal growing dissatisfaction within the party's core supporters.

An average of recent polling from the New York Times shows Trump's approval rating is 44%, as of Thursday, July 2, with 52% disapproving of his job performance. That's basically the same as his ratings all of May and June, with the Times' average approval swaying between 44% and 46%.

While Trump’s job performance remains underwater this week in the poll, his approval numbers rose 2 percentage points from last week while his disapproval ticked 1 percentage point lower, the poll found. The survey showed 42% of U.S. adult citizens polled approve of the way Trump his handling his job compared to 53% disapprove.