Cook Political Report moves Michigan from "toss up" to "leans Democratic" in presidential race

• Cook based its decision on the fact that polling averages have Joe Biden leading by 10 points in the state — higher than other similar battlegrounds, like Pennsylvania — and increasingly winning over shares of Republican and independent voters there.
• But Cook's Amy Walter does note that Trump's polling currently is at a trough — and says it's not yet clear if "he's done permanent damage to his re-election prospects among" his base in Michigan.

Worth noting: In Cook's latest update, Iowa and Ohio also moved from "likely Republican" to the more competitive "lean Republican" category.