The vast majority of Republicans want Donald Trump to be president. They've repeatedly told the pollsters, they've turned out in huge numbers for the GOP nominee's rallies, they've given him a record-breaking number of small donations and they are trying to help him win. Some of them were for Rubio, some of them were for Kasich and a lot of them were for Cruz, but they have come together in an effort to save the country from Hillary Clinton.
A small minority of Republicans do not want Donald Trump to be president. They prefer Hillary Clinton. Unfortunately for most of the Republican Party, this small group of angry dissenters includes many of the people at the top of the party -- officeholders, major donors, "strategists," and "conservative" pundits. These people have been able to leverage their connections with the mainstream press to repeatedly attack Trump -- even though they refuse to say anything nice about Hillary.
The Republican Party is led by people who have more in common with the Clintons than with the GOP base.