Severus Snape! He wins by a count of 33 to 21 over Luna Lovegood in the finals!
Snape pulls the double, winning the Save My and Tournament, although he had more trouble in the tournament, notably only beating Dumbledore by 3 votes.
His final path:
(1)Severus Snape defeated (16)The Fat Lady 21-1
(1)Severus Snape defeated (8)Fluffy 22-1
(1)Severus Snape defeated (5)Molly Weasley 26-8
(1)Severus Snape defeated (2)Nymphadora Tonks 22-4
(1)Severus Snape defeated (1)Sirius Black 22-16
(1)Severus Snape defeated (1)Albus Percival Wulfric Brian Dumbledore 22-19
(1)Severus Snape defeated (1)Luna Lovegood 33-21
Dean Thomas lost to Oliver Wood, who lost to Kingsley Shacklebolt, who lost to Sybill Patricia Trelawney who lost to Minerva McGonagall, who lost to Harry Potter, who lost to Luna who lost to Snape. So Deans your ultimate loser.
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Warning_Crazy Winner of Board 8 Big Brother!
i may be running for senatorship (thanks nio) but i'm no SUPERNICEDOG