The future president and sole candidate in Tuesday's poll, meanwhile, pledged to southern separatists and northern rebels that he will address their concerns, as fears mounted over boycotts and escalating vote-related violence.
"I invite you to actively participate in this democratic event and to head to ballot boxes to vote for (Vice President) Abdrabuh Mansur Hadi," Saleh said in a speech addressed to Yemenis, published by the state Saba news agency.
Saleh, who is receiving medical treatment in New York for wounds suffered in a bomb attack last June, urged all Yemenis to "overcome the past and move forward in rebuilding what the disastrous crisis exploited by backward and terrorist elements has caused."
Both the separatist Southern Movement and northern Shiite rebels are boycotting the vote, which comes a year after the launch of an anti-Saleh uprising during which security forces killed hundreds of people.
Attacks on polling stations and clashes between troops and anti-election protesters in southern Yemen, resulting in two deaths on Monday, have raised fears that polling day could be marred by violence.
Hadi in a televised speech late on Sunday said "dialogue and only dialogue" can resolve Yemen's long-standing conflicts.
"The southern issue and its implications, and what happened, and what is still happening in Saada (the rebel stronghold in the north), must be given priority... and must be addressed with an open heart and without prejudice," he said.