Brazil's presidential candidates Luiz Inacio Lula da Silva (L) of the Workers' Party (PT), and Geraldo Alckmin of the Social Democratic Party (PSDB), shake hands before the start of a TV presidential debate in Sao Paulo, Brazil, 23 October 2006, in view of the October 29th runoff. AFP PHOTO/Mauricio LIMA (Photo by MAURICIO LIMA / AFP)