The comments came after the Nobel Peace Prize winner - who turned 70 on Friday - cut a birthday cake alongside fellow National League for Democracy (NLD) luminaries during an official celebration at a restaurant famed for being a dissident meeting place.
Myanmar is expected to hold its first national vote in a quarter of a century sometime in October or November with many expecting Suu Kyi's NLD to sweep the board if the polls are free and fair.
"We the National League for Democracy need to have a landslide win in the election," she told supporters.
"Whatever we continue to do, with the support of the people and the strong will of our party members we will be successful," she added.
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Her comments underscore the long road to electoral success the NLD still faces, even though military rule has given way to a quasi-reformist government promising clean polls.
Under Myanmar's current constitution, a quarter of parliamentary seats are still reserved for unelected soldiers.
Meanwhile Suu Kyi is barred from becoming president under a rule that excludes those with foreign spouses and children - a provision seen as aimed directly at Suu Kyi, whose two sons are British.
Technically Suu Kyi has yet to decide whether the NLD will even contest the polls. Yesterday she said a decision would be made shortly.
But in many ways, she has already begun campaigning with a series of high profile public appearances and speeches in recent months designed to solidify her position as the country's pre-eminent opposition politician.
Around 300 supporters gathered outside the Royal Rose restaurant, a popular NLD meeting place close to the city's towering Shwe Dagon pagoda.