That is the most likely of scenarios. He's not going to win new people over who currently loathe him.
Speaking of people who loathe Trump, just read this on CNN:
"Donald Trump and Hillary Clinton register net negative ratings in double digits, indicating the front-runners for each party's presidential nominations are viewed negatively at historic levels, according to a new CBS/New York Times poll.
That makes Trump and Clinton viewed more unfavorably than any front-runner for either party since 1984, when CBS began polling voters on the question.
On the Republican side, Trump scores a net negative of -33, with a favorable rating of 24% compared to 57% of voters who view him unfavorably. On the Democratic side, Clinton fares only slightly better with a net negative of -21, registering a 31% favorable rating and a 52% unfavorable rating, according to the poll."
http://www.cnn.com/2016/03/22/politics/2016-election-poll-donald-trump-hillary-clinton/index.html