Tony Abbott has been many things; a Rhodes scholar, an MP, a brutally effective Opposition leader and a triumphant Prime Minister, only to be deposed by his colleagues. He is seen as one of the most combative figures in politics and a warrior for conservative voices. Now, after 25 years in federal parliament, the Liberal MP for Warringah says he is in the fight of his political life. Ahead of Saturday's vote, Four Corners has been documenting the unfolding campaign. On Monday the program will examine how the seat was won and lost and what that means for the future of the Liberal Party.