Barack Obama, speaking at a Wednesday campaign rally in suburban Atlanta, offered a closing argument for Democrats in the final week of the midterm election campaign.

“These are not serious people,” he said of Donald Trump and the Republican party. “And we’re all paying the price for their lack of seriousness.”

Obama came to Georgia to support the campaigns of US senator Jon Ossoff , former Atlanta mayor and gubernatorial hopeful Keisha Lance Bottoms, and an array of down-ballot Democrats as part of his cross-country campaign tour before next week’s election. From 3,500 to 4,000 people filled the Discovery Center of Clayton county for the late election season stop, just south of Atlanta.

Obama has been casting caltrops behind him with each campaign stop, offering pointed criticism of Republican candidates and Donald Trump that has been unusual for the former president.…