Passage: When Dafydd Elis-Thomas (Plaid Cymru) was reelected as the presiding officer, this reduced the number of opposition AMs who could vote to 29, as the presiding officer votes only in the event of a tie and, even then, not on party political lines but according to Speaker Denison's rule. Thus, Labour had a working majority of one seat until Law ran in Blaenau Gwent.

Question: What was Dafydd Elis Thomas reelected as?
presiding officer