Hey Spot! Congratulations on the promotion by the way!
The word 'who' is used for sentences with nouns. Example sentences are; 'Who did it?' 'Who is he?' 'Who is Jacob?'
The word 'whom' is used for sentences with verbs used. Exmaple sentences are; 'Whom threw my paper away?' 'Whom is he idolizing for?' 'Whom did he marry?"
Leading is a verb in the sentence you edited, therefore, 'whom' is used in the sentence. However, Modern Society is used to using 'who' that we forget the word 'whom' and it's uses. For example; 'With who are you staying with?" it's correct, in a way, but the correct sentence should be; "With whom are you staying with?' But this rule might change, depending on what region you from (American, British, Australian, etc.)
Don't worry about this mistake, you're going to have to create a mistake sooner or later. Once again, congratulations with the promotion! I expect great contributions from you real soon! :)
Greetings BlazedDragon! Thank you very much, by the way. :)
Actually the word 'who' is the subjective pronoun, while 'whom' is the objective pronoun. You can think of them in terms of 'they' and 'them.' Where you can substitute the word 'they', you should use 'who'. Where you can substitute 'them', you should use 'whom.' In the cases you listed, 'Whom is he idolizing for?' 'Whom' is the object of the sentence (not the subject), and therefore 'whom' is correct. Also 'Whom did he marry?' ('Whom is the one being married, not the one marrying; note 'he' is the subjective form of 'him', which is correct in that case).
It's really a matter of whom (no pun intended) the verb is acting on, not the mere presence of it in the sentence. In your example, 'Who' is the subject of the sentence (the one leading, not the one being led). Anyway, that's why I changed it, but if you don't agree it's your article and I won't touch it again. :)
Edit: I did a little research online to see if I could find a definitive source...I wouldn't call anything I found 'definitive', but I did find one from the University of Kansas that gives a pretty thorough explanation:
That's what I was taught here in the USA but there very well could be differences elsewhere (you are from Australia, yes?); I'm just attempting to explain my logic...if that's not proper for you I apologize for changing it.