http://en.wikipedia.org/wiki/Wikipedia:Requests_for_comment/Arbitration_Committee_Elections_December_2012#How_should_we_deal_with_unforeseen_problems.3F
This year's ArbCom election will feature an "Electoral Commission" that'll "deal with unforeseen problems, adjudicate disputes, and as Jimbo continues to shift his role, to ceremonially announce the final results".
There is currently a RfC page for evaluating possible members:
http://en.wikipedia.org/wiki/Wikipedia:Requests_for_comment/Arbitration_Committee_Elections_December_2012/Electoral_Commission
Anyone may comment on the hopefuls, but the Jimbo will make the final decision on who'll serve on the Commission: