As Republican Tyler Kistner's closing ad aired last month in one of the most competitive congressional districts in the U.S., Vickie Klang felt that something was missing. The 58-year-old veterinary technician and self-described independent voter watched as the 30-second spot showed grainy black-and-white images of President Joe Biden with two-term Democratic Rep. Angie Craig superimposed alongside him. Klang ultimately backed Craig, contributing to a 5 percentage point win for a Democratic incumbent whom Republicans spent more than $12 million to unseat.