Emmanuel Macron leading challenger Marine Le Pen
A crucial TV debate takes place tonight, ahead of the French presidential election on Sunday.
Polls show current President Emmanuel Macron's lead over Marine Le Pen is growing ahead of the run-off vote.
But the incumbent is being warned against complacency, with many voters still undecided.
CBS News correspondent in Paris, Elaine Cobb, says Le Pen has widened her anti-immigration stance:
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