With Labor sinking in the polls going into the 2011 election, there was some speculation that Tebbutt would be toppled by a Green candidate. Indeed, the ABC's Antony Green predicted that Tebbutt would be defeated by Green candidate and Marrickville Council mayor Fiona Byrne. In a very tight contest that came down to less than 680 votes, Tebbutt won the seat with 50.9% of the vote on a two-party-preferred basis, suffering a swing of 8.5%. The campaign was marked by anti-Zionist protests as four months earlier, Byrne and Marrickvile Council had controversially voted to boycott Israel. There were no allegations that Tebbutt was involved in any of the anti- or pro-Zionist threats that occurred during the campaign.