All of these charts were made from information contained in a new Economist / YouGov Poll -- done on November 28th and 29th of a random national sample of 1,451 adults (including 1,257 registered voters. The margin of error was 3.1 points (3.2 for registered voters).
It seems that a majority of Americans doubt that Donald Trump will be a good president (41% to 59%) -- an 18 point margin. And registered voters agree by a slightly smaller 14 point margin (43% to 57%). And that is true of all groups but one. A majority of seniors (65+) had a slim majority believing he would be a good president (53% to 47%). All other ages, both genders, all races, and all incomes had a majority believing Trump would not be a good president.
Trump also doesn't compare very favorably with President Obama (see charts below). Obama is viewed as more likable by a 21 point margin. And he viewed more favorably by a 12 point margin.
Trump has claimed a landslide victory and a mandate from the election. Neither is true. The truth is that he's starting out behind, and has a long way to go before winning over a majority of Americans. I guess that shouldn't be a surprise, since he lost the popular vote by more than 2.5 million votes.