In the limited jurisprudence we have on the existing section 91 about false statements about candidates, the courts have recognized that it would include such things as allegations about criminality, which the bill does address, but also something else that they call “moral turpitude”. You're right. It is a soft legal concept. It's more recognized in the United States in the immigration context. Even then, in the United States it's very much limited to criminality, so some crimes have a high level of moral turpitude.
In the way it's applied in Canada with respect to section 91, it involves some serious character flaw or something about the character of the person that is problematic and untenable. That's the way the jurisprudence has described it.