Republican senator faces critical re-election battle in state where president’s trade war has outraged voters

Donald Trump dropped some of the US’s tariffs on Canada on Friday to “better serve the public interest” the White House said, handing a win to Susan Collins, the embattled Republican senator for Maine, as she faces a tight re-election campaign that will help determine whether Democrats can flip control of Congress.

Collins announced that the exemptions would apply to nine agricultural products, including blueberries, potatoes, apples and seaweed. She added that many of the state’s farmers rely on specialized equipment and materials from across the border that are “unavailable from American suppliers or cannot be replaced without incurring significant expense”.

Trump justice department claims there could be ‘confusion’ about two Republicans on the ballot named Dan Sullivan

Donald Trump said he ordered the justice department to file a lawsuit to block the certification of Alaska’s US Senate results if the Republican incumbent loses, a move that voting rights experts called an “unprecedented intervention” by the federal government with control of Congress in the balance.

“I’m the one that said do it,” the president told reporters as he landed in Florida for a campaign rally on Friday.

Republicans are resorting to childish taunts to defend an uncommonly dishonorable state attorney general

It’s a bit like Lucy with the football. Every few years, Democrats convince themselves that a Texas Senate seat might finally switch from red to blue. On paper, it makes sense. Texas is a large and urbanizing state with an increasingly educated – and increasingly non-white – population.

Other one-time Republican strongholds that have undergone similar demographic shifts have turned purple or even blueish – think Georgia, for example. The border counties along the Rio Grande valley, with their deep poverty and big Latino populations, were long thought to be fertile ground to nurture a kind of anti-Trump populism that could be converted into pro-Democratic sentiment. The state Democratic party is anemic there, but a few talented candidates have emerged.

Moira Donegan is a Guardian US columnist