Marshall Zellinger dissects the assertions, accusations and innuendo in dozens of political TV ads. He tells Colorado Public Radio's Mike Lamp most ads aren't completely untrue. They take a factual statement, then surround it with exaggerations and false connections that can mislead viewers - and voters. An ad in one Colorado Congressional race uses a candidate's own words against him, in a way that may or may not be fair. Zellinger produces the "Facts or Fiction" election series for KMGH, Denver's Channel 7.