The [Hillary] Clinton campaign posted a pretty clever online quiz that makes a similar point with the Republican presidential field. Who said it? Donald Trump or not Donald Trump? For example, quote, "I mean you can prove you are a Christian. You can`t prove it, then you err on the side of caution." That was not Donald Trump. It was this guy, who strongly denounced Trump`s proposed Muslim ban but supports a religious test for refugees.

There are a variety of groups, Human Rights Campaign, Planned Parenthood, NARAL, Sierra Club, that are groups that do very good work, that do a lot of things that I personally believe in, that are also as a descriptive matter they`re part of what you`re going to call an establishment in Washington of the sort of center-left probably, Center for American Progress. They are part of it.

I mean,[Marco] Rubio, he`s having fun. I`ve got to say I`ve never seen him enjoy himself out there so much. He`s found way to get under his skin. So, he`s found way to look like he`s somebody that is a force, which has hasn`t so far.

For the love of god, find something actually socially useful to do with your money. Because if you don`t, socialism`s going to start looking a lot better to a whole lot of people.

[Marco] Rubio, in particular, focused on something far more elemental. Trump`s character and record as a businessman, and in the process perhaps added a few chapters to the Democrat`s play book against [Donald] Trump.

The other theory of the case - and it`s not just one that people opposed to him politically believe, but also people who share the Republican Party`s beliefs or conservative, but don`t like Donald Trump, is that he`s fundamentally a narcissist who has become addicted to the attention, is sort of compulsively driven by attention, and this has given him an outlet for that attention, and crucially doesn`t actually care about the party that he is nominally representing.

Something changed between the two men, namely [Donald ] Trump started slinging mud on Twitter about [Ted] Cruz`s wife, Heidi, including a mean comparing her looks unfavourably to his own.