On Wednesday, Wade made campaign stops on the outskirts of Dakar, meeting with hundreds of supporters, Voice of America reported.
Wade took 35 percent of the votes in the first round of voting Feb. 25, beating main opposition Macky Sall, who won just under 27 percent.
In Sunday's second round of voting, Wade said he is confident his majority will rise to 75 percent.
However, opposition to Wade has been mounting. The opposition said Wade's candidacy in this year's presidential election violates a constitutional two-term limit, as Wade is ending his second term now.
Wade first entered office in 2000 and won re-election in 2007 in the first round. He said he wants to serve another three years of a third mandate to finish his projects, including a new airport outside Dakar.
Critics have also said Wade, 85, wants to pass on power to his son and government minister, Karim, which Wade denies.