If one believes in exit polls, half of those who voted for Trump were anti-Clinton voters. Not necessarily Trump supporters. They just didn't want Hillary Clinton in the White House. Do the math, 46% of the electorate voted for Trump. Half voted against Clinton, not for Trump per se, any Tom, Dick or Harry, even a Pataki would have done. That leaves 23% of the electorate who actually wanted him to become our next president.
Yes, independents who went for Trump 46-42 over Clinton last November, 12% voted third party. Have indeed dropped their support. Gallup showed 42% of the non-affiliated voter approving of Trump at the end of January, that is down to 31% today. YouGov showed a 48% approval rating for Trump at the end of January, that is down to 34% today. Most other polls which breakdown the parties are somewhere in-between the two. They never had Trump's approval as high as 48% or as low as 31%.
It's interesting to note that at the end of January only 8% of Democrats approved of Trump and today that is still 8%. No movement. Now Republican approval has dropped from 87% at the end of January down to 78% today. What is really interesting is that 25% of all Americans viewed or disliked both Trump and Clinton. Yet among this group Trump won it by a 47-30 margin over Clinton. Again, not votes for Trump as in they wanted him to sit in the White House, but more of a vote against Clinton.
It doesn't surprise me one bit that Trump's approval numbers continue to fall. I said as much many times last year leading up to the election. That regardless of who won, whomever would have a very hard time governing if that would be even possible. This is exactly what one would expect when the choice is between two candidates which 60% of all Americans or America as a whole didn't want either to occupy the Oval Office. One had to win being we have a two party system, perhaps that winner is actually a loser in the long run to include the political party he says he now belongs to.