Tester, Rosendale both go on the attack

Attack ads have been flying in Montana’s highly watched U.S. Senate race, where an incumbent Democrat is running for re-election in a state that gave the 2016 election by 20 points to Republican President Donald Trump — who has attacked the incumbent and endorsed his opponent.

Incumbent Sen. Jon Tester, D-Mont., faces Montana Auditor Matt Rosendale, a Republican, in the general election.

Trump has been in Montana to campaign for Rosendale, as has Vice President Mike Pence.

In interviews in which the candidates were asked about their opponents and issues that have been used in attack ads, Teste...