The vast majority of Canadians are worried Republican candidate Donald Trump will win the U.S. election on Tuesday, believing his presidency would be bad news for Canada.

Eighty percent of Canadians said Trump would be "bad" for their country — the highest number since Insights West began polling on Trump in August 2015, the market research company said.

Even more — 81 per cent — said they were “very” or “moderately” worried about a Trump victory.

There's been an "extraordinary" number of Canadians engaged with this American election, said Mario Canseco, vice president of public affairs at Insights West. Very few Canadians hold no opinion on either candidate, he said.

One third of respondents said the federal government should “seriously consider” severing diplomatic ties with the U.S. should Trump win. That hasn't happened since 2012, when then-foreign affairs minister John Baird said Iran was inciting genocide.