Jeb Bush dropped out because he saw he was rejected and could not win.
Now, we have Kasich, who has only won one State, hanging around as if he is a legitimate candidate, which he isn't.
If all nominations were held like this one, it will always end up at the convention, with the Party bosses deciding who is going to be the candidate, not the voters.
This is now what the GOPe wants since they see their candidates have been totally rejected by the grassroots.
As the campaign season moves on, there should be only two candidates left to see who the voter's truly want, not one whose only purpose is to draw votes away from the frontrunner so he can't get the majority of delegates.
This goes against the spirit of primaries and will result in all future nominations either farces, with the voters not voting, or back in the convention so the elites can choose their candidate.
Actually, this is the way it always works, with the exception of one element. Usually, about this time, you would see the Front Runner emerge and start piling up win after win. Romney did it in 2012. McCain did it in 2008. GWB did it in 2000. Bob Dole did it in 1996... etc.
It is up to the Front Runner to rack up the wins in the middle part of the primary, so that he is the presumptive nominee by the time California and New Jersey roll around in June. I have been voting in New Jersey since 1990, and there has never been a case where the Front Runner had not salted it away by then.
It is not that the other candidates pulled out. They were knocked out. This is the way it usually works, and this is what Donald Trump, for whatever reason, is not able to do this year.
It is not John Kasich's fault that Trump's campaign is sputtering. When no Front Runner emerges to unite the party, the smart play is to stay in.