Americans are about four times as likely to blame the current trade dispute on Trump rather than Canada, ​according to a Reuters/Ipsos opinion poll conducted late last month. Only 20% of respondents supported higher tariffs on Canadian goods.

The economies of Michigan and Maine have long been intertwined with Canada’s, covering everything from auto parts to lumber to fruit-picking equipment. That has raised the stakes in two states that Republicans will likely need to win in the November 3 elections if they are to hold the US Senate – and their respective candidates have taken notably different approaches with voters, each with its own political risks.

The Senate races in both Michigan and Maine are considered toss-ups by the Cook Political Report.

Republican ​Senator Susan Collins of Maine is breaking with Trump, criticizing the tit-for-tat exchange of tariffs and seeking carveouts for affected industries. Michigan Senate candidate Mike Rogers, by contrast, has criticized Canada and made the case ​that his close relationship with the president will help blunt the impact of the trade war.

Helen Coster, Reuters: As Canadian tariffs bite, Republicans search for a winning message

Reuters: Majority of Americans oppose Trump’s new Canada tariffs, renaming Lake Ontario, Reuters/Ipsos poll finds