A Washington-based super PAC that has spent a staggering $3.5 million to support physician Ala Stanford for an open Philadelphia congressional seat pulled its television advertising off the air this week with just days left until the election. That is according to media tracking firm AdImpact, which shows that the “pro-science” political action committee, 314 Action Fund, spent hundreds of thousands of dollars a week to air pro-Stanford TV commercials through much of March and April. However, that changed last week. The group has spent virtually nothing on television since May 5, according to AdImpact, and has not reserved any...