On Tuesday morning, Mexico's peso was selling on average at 19.45 per dollar in banks
The peso, the chief proxy for market pricing of Trump's chances, firmed to 18.455 per dollar
Peso closed at 19.2955 per dollar, up 0.39% compared to last Friday
Yields on Mexican interest rate swaps fell sharply, suggesting investors were eyeing less steep rate hikes in the coming months.
According to CiBanco, Clinton's performance in debate and outcome of OPEC global oil output freeze deal to affect Mexican peso
The peso closed at a record low on Wednesday of 19.2745 per dollar after big losses that were partly fanned by concerns U.S. Republican candidate Donald Trump could triumph over his Democratic rival Hillary Clinton in November.
Expectations that the U.S. Federal Reserve could raise interest rates sooner than expected have been the main factor weakening the Mexican peso in recent days.
The peso hit 18.235 per dollar, its highest since June 9
It has underperformed its Latin American peers for months, dropping 8.4 percent so far this year.