A new survey of election law in all 50 states apparently destroys House Speaker Mike Johnson’s claims about Vice President Kamala Harris’ eligibility for the ballot. The Louisiana Republican argued that legal “impediments” in some states would prevent Democrats from switching out President Joe Biden as the nominee after he withdrew from the race, but election authorities from both parties in at least 48 states told CNN that no obstacles would prevent Harris from appearing on ballots if she becomes the official presidential nominee. “Two states did not respond, Florida and Montana, but experts …