Argentina's legislators are due to vote on whether to legalise abortion amid fiercely polarised campaigns for and against the proposed bill.
Tuesday's vote comes a week after the Senate approved the text for the bill that was originally passed by Congress' lower house in June by the narrowest of margins.
The proposed legislation would allow abortion in the first 14 weeks of pregnancy and beyond that in cases where the
foetus suffers from conditions not compatible with life outside the womb.
The bill is expected to fall short of the necessary votes to pass into law, with 37 of 72 senators believed to be ready to say no despite a massive social campaign to have it adopted.