The discount on Western Canada Select (WCS) heavy crude versus the North American benchmark West Texas Intermediate (WTI) tightened on Tuesday:
* WCS for December delivery in Hardisty, Alberta, traded between $12.10 and $12.30 per barrel under the WTI benchmark, according to brokerage CalRock, having settled at a discount of $12.60 a barrel under the U.S. benchmark on Monday.
* The benchmark Canadian heavy oil differential has tightened around 50% year-on-year, according to ARC Energy Research Institute.
* Global oil prices edged up about 1% with a storm expected to cut U.S. output in the Gulf of Mexico and as the U.S. dollar weakened on Election Day with polls showing America’s presidential race is exceptionally close.
(Reporting by Nia Williams in British Columbia; Editing by Subhranshu Sahu)