As for Trump, 91 percent of Democrats and 75 percent of independents said he was doing a poor or fair job as president, while 66 percent of Republicans said he was doing an excellent or good job. Trump’s support was weakest in Philadelphia, with 85 percent disapproval, and strongest in Southwest Pennsylvania, with 59 percent approving the president’s performance. That region was the only part of the state where Trump won a majority of support in the poll.