MADISON, Wis. — President Joe Biden, fighting to save his endangered reelection effort, used a highly anticipated TV interview Friday to repeatedly reject taking an independent medical evaluation that would show voters he is up for serving another term in office while blaming his disastrous debate performance on a “bad episode” and saying there were “no indications of any serious condition.” [time-brightcove not-tgx=”true”] “Look, I have a cognitive test every single day,” Biden told ABC’s George Stephanopoulos, referring to the tasks he faces daily in a rigorous job.