Marois says the opposition party is, in her words, "completely isolated" on the issue.
She says the Parti Quebecois' proposed law would give the province a framework so that people from different backgrounds can live in harmony.
The opposition Coalition party, which holds the balance in the minority legislature, has said it's open to discussions.
The legislation introduced Thursday includes a plan to ban public sector employees from wearing overtly religious clothing.
The PQ is threatening to trigger an election over the issue by making votes on the legislation a matter of confidence.
In a speech Saturday at the PQ convention in Montreal, the premier also hinted at the limits of the PQ's power in a minority situation.
She said the Liberal opposition has made it difficult to pass through new laws related to mining, economic development and protecting the French language.
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