No. Chances are Trump will do worst than Romney did in 2012 and maybe even worst than McCain especially in the electoral college. Trump as of today is polling 39% in a four candidate field. Remember Romney garnered 47% and McCain 46% of the popular vote. Those hated RINO's by the Trumpers, the ones they sent their statement to during the primaries seem assured to top Trump's total percentage by at least 5 points or a bit more.
You have to go back to 1992 when George H.W. Bush received 37% of the total vote to get a vote total lower than what Trump is drawing now. But Bush the elder has Ross Perot in the race in 92, he was well financed and known. Not like Johnson and Stein, two candidates and political parties who never cracked one percent of the total vote. In fact no one has ever paid attention to the Libertarian or Green Party candidate until this year. If it weren't for the nomination of Trump, Johnson and Stein would be below one percent where they belong, not getting 10% of the total vote together. To be fair, Hillary Clinton has as much to do with those two third party candidates good showing with no money, no name recognition, no media attention, no TV ads, no nothing except last names not Clinton or Trump.
In the electoral college, just counting states where one candidate or the other has at least a five point lead or more, Clinton leads 272-113. 270 needed to win. When states like Alaska, Arizona, Georgia and even Indiana are rated tossups, Trump is indeed in trouble. Clinton even leads in Arizona and is behind by just 4 points in Texas.
Trump's unfavorable rating is back over 60%, Clinton's is down to 55% and considering folks tend not to vote for those they dislike, I don't see Trump getting too much more than 40% of the total vote.