In an announcement read out on state media the Union Election Commission said it had decided to go ahead as planned with elections, after floating the idea of a delay at a meeting with major parties in the capital Napyidaw.
"Following a review of the possible pros and cons of postponing the election date, the commission's decision is that the general elections will be held on November 8 2015, as previously stated," said an announcement read out on state media.
Suu Kyi's National League for Democracy (NLD), which is forecast to make major gains in the polls, earlier said it was against any attempt to stall the first nationwide vote it has contested in a quarter century.
Win Htein, a spokesman for the NLD, said the party was alone in opposing the postponement. Election rules mean the authorities can suspend voting in constituencies affected by natural disaster or unrest.
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Officials earlier today said they had cancelled voting in swathes of northern Shan and Kachin states bordering China because of ongoing fighting with ethnic rebels.
"Some village areas have security restrictions and we have security concerns about those. Others are in the control of Kachin (rebels) where we are not capable of holding elections," Tun Aung Khaing, a senior election official in Kachin State, told AFP.
It comes as Myanmar prepares to sign a limited ceasefire on October 15 as it tries to end decades of civil war.
A ceasefire between the army and Kachin rebels collapsed in 2011 under a new quasi-civilian government.