The real problem is that all the candidates except for Cruz and Carson are liberal or e/e GOP controlled. Which is the same as being liberal. So your attempt at isolating Trump as a liberal does not really ring true. When you are faced with liberal candidates everywhere, the candidate without strings, who is beating up on the liberals while being the only one talking positively about conservative topics, is going to rule.
The RINO republican GOPee did this to their own selves. They imagined they didn’t need conservatives at all and believed there was no way any conservative voice could get by their carefully laid out plans.
They were wrong. Man may propose but God disposes. They created a huge vacuum. To the GOPee dismay, consternation and despair, Trump was able to fill the vacuum.
May Trump continue to crush the RINO GOPee until they are utterly destroyed.