I feel the party has a responsibility to endorse and support any of its members. Individual members are still free to support/vote for whoever they want.
There is no reason for a party to endorse its own members without the members voting for it first. All candidates need to be held to the same standards by this party, no matter what party they're from.
Don't want to interject if I'm not welcome, but isn't the sole point of a party to get its members elected so they can govern by the party's philosophies. If someones not automatically endorsed what the point of there being parties at all?