[keiferski]

Most of the conservative establishment was against Trump at the beginning. Especially Fox News, the primary mouthpiece of the then-traditional Republican Party. Remember that Trump was/is quite critical of the Bushes and other neocons. Watch one of those "Trump won't be president" highlight reels on YouTube and you'll see plenty of Republicans included.

Even today, you have a fair amount of Republicans who criticize Trump for various reasons, including Mitt Romney, the 2012 nominee, and John Kasich. Additionally the new "Lincoln Project" is funded and run by anti-Trump Republicans.

https://en.wikipedia.org/wiki/The_Lincoln_Project

[MisterBastahrd]

The Lincoln Project is mostly a group of ad guys who would normally get paid at this time of year but have made themselves anathema for the time being from their traditional customers. They've just pivoted because the smart money is on getting funding from Trump oppo groups.