Democrats who have been named as potential replacement candidates praised President Joe Biden’s decision to drop his reelection bid Sunday — as former President Donald Trump bitterly condemned him as “never” fit for office. Michigan Gov. Gretchen Whitmer called Biden a “great public servant,” and said his move showed he “knows better than anyone what it takes to defeat Donald Trump.” His “remarkable work to lower prescription drug costs, fix the damn roads, bring supply chains home, address climate change, and ensure America’s global leadership over decades will go down in history,” Whitmer wr…