In some states the right of a person to participate in a primary may be challenged and he may then be called on to prove his right by taking an oath to support the ticket which results from such primary. Such a procedure is morally correct; if universal it might do much to put a stop to the present eat-your-cake-and-have-it-too attitude of some irresponsible politicians.And a not-so-little question: who else would he say it to?
Party regularity and party discipline are pragmatically necessary and morally correct in any political party if that party is to carry out its responsibilities. This is especially true with respect to unsuccessful candidates in a party primary; no man should offer himself as a candidate in a party primary unless he is prepared to abide by the majority will of the political group he seeks as a sponsor. Running in a primary is a voluntary action, very similar to joining a caucus; it carries with it responsibilities as well as privileges. A candidate need not enter a primary at all; he is always free to run as an independent instead.
That's gotta be the most futile waste of time I can think of - asking a politician to take an oath (then expecting him to keep it).
RAH must have had an off day when he thought this up.