James Carville blasted Maine Democrats for failing to vet Platner, saying opposition research on your own candidate is the most important step.
https://www.foxnews.com/media/carville-blasts-dems-amid-platner-scandal-warning-they-ignored-classic-rule-politics-paid-price
https://www.foxnews.com/media/carville-blasts-dems-amid-platner-scandal-warning-they-ignored-classic-rule-politics-paid-price