USC Dornsife Understanding America Poll included some questions on voter opinion last month. Summarized in this USC article and in the LA Times by David Lauter: "The poll illustrates the steep challenge that Trump faces in winning reelection: A majority of Americans eligible to vote would be unhappy if Trump were reelected, the survey finds. Of those polled, 54% said they would be unhappy, 29% happy, and 16% neither."