"One person pleads guilty to a misdemeanor and others are suspected of felonies and/or treason.   Whose continuing position in the government is more problematic? "

Well, if I understand your question, that requires several answers.

1. I'm not sure I can see a case where a misdemeanor should be a problem, so I can't see where one who pleads guilty to one couldn't remain in office without a problem. I can think of several misdemeanors, however, that may lead to serious problems with one getting re-elected.

2. If one is suspected of a felony, or of treason, he, of course, WILL remain in office until such time as due process runs its course. If he is found innocent of the charges, then, of course, his remaining in office is of even less consequence than is the fellow guilty of the misdemeanor. If he is found guilty, he will, of course, face a much greater consequence than would the fellow who pled guilty to a misdemeanor.

3. The two are unrelated. One person's felony does not absolve the guilt of another's crime or misdemeanor.