Several dealers said the Reserve Bank of India was spotted buying dollars throughout the day to prevent the rupee from strengthening excessively above 60 to the dollar.
Traders expect the rupee to continue to hold in a tight 59.80 to 60.20 per dollar on Monday ahead of exit polls due to be released after 1830 India time (1300 GMT).
Though these polls have proved unreliable in previous elections, traders expect to get some clarity on what the final results to be released on May 16 may look like.
Markets have priced in a narrow victory for the opposition Bharatiya Janata Party and its allies in the 543-seat lower house of parliament.
"The equity markets reacted positively on hopes of a strong mandate for the BJP, but rupee investors acted more wisely," said Subramaniam Sharma, director at Greenback Forex.
"I expect the unit to hold in a 59.60 to 60.50 range and at best gain to 59.20 or fall to 60.80
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