안녕하세요...  whom이 맞습니다. 

헷갈리시는게 맞습니다. 두번째 문장에 하자가 있습니다. 

문장을 이렇게 바꾸세요. 

It is ironic that the recommendations of the committee were opposed by Bruno, who/whom the committee initially elected. 

Q: Who did the committee elect? 

A: The committee elected him. 

so, 

It is ironic that the recommendationis of the committee were opposed by Bruno, whom the committee initially elected. 

이제 이해가 되시죠? 

 도움이 되었기를 바랍니다~~