While the Republican challenger has made a repeated reference to the Keystone XL pipeline project in his campaign speeches, the only other time Canada registered in the presidential debates was a passing mention of the country's 15 per cent corporate tax rate, something Romney and his vice-presidential running mate, Paul Ryan, praised.
Yet no matter who wins Tuesday, he will face a growing number of pressing issues on the Canada-U.S. front.
David Wilkins, the U.S. ambassador to Canada under President George W. Bush from 2005 to 2009, says it's a relationship that is vital on both sides of the border.
"Seventy per cent of Canadian exports go to the U. S.," he observed, in an interview from Greenville, S.C. "We're important to Canada. Canada's important to us. We need to do all we can to enhance the relationship."
Here's a look at the issues he and other Canada-U.S. watchers feel will land on the big desk in the Oval Office in the months and years to come.
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