The former junta-ruled nation has seen sporadic outbursts of deadly unrest in recent years, largely targeting minority Muslims who face increasing political exclusion as the influence of Buddhist nationalist monks grows.
Campaigning in her rural constituency of Kawhmu today, Suu Kyi addressed the thorny issue of minority rights when a Muslim villager expressed a wish for equality if the National League for Democracy (NLD) sweeps to power as is widely tipped.
The Nobel laureate repeated recent claims that her political opponents were using religion in the Buddhist-majority nation to divide people ahead of the November 8 polls.
But this time she went a step further by questioning why the army-backed ruling Union Solidarity and Development Party (USDP) was not enforcing the law banning the use of religion in political campaigns.
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"The government needs to safeguard the law for people to be able to live peacefully. We have to question the ruling authorities on why they're not taking proper action," she said.
In March it also revoked temporary identity documents, stripping hundreds of thousands of minority Rohingya Muslims in the western state of Rakhine of voting rights.
On its campaign trail in recent weeks the USDP has urged voters to pick it as the party which safeguards religious rights, at a time when radical monks are preaching the message that Muslims threaten the social fabric of Myanmar.
Suu Kyi herself has faced accusations of bowing to religious hardliners.
International powers including the US have raised fears that surging religious tensions in Myanmar could spark conflict ahead of polls seen as a crucial test of its transition towards democracy after decades of military rule.