A Funny Thing Happened on the Way to the Primary

First there were four now there are three, what happened?

In normal (read that fair) circumstances a primary is held to let the members of a political party vote for whom they want to represent then in the general election. This is just like presidential primaries. There can be many candidates in the running and the voters, you and I, vote on primary day for the candidate of our choice. Why then was just one candidate singled out and removed, thus taking away the choice that rightly belonged to the voters? Why was one candidate treated differently from the others? Why didn't they trust the people to decide who their candidate would be? Does this remind you of two years ago when our choices at the ballot box were taken away from us?