Why would a chemical lobby spend a half million bucks on TV ads supporting Tim Murphy? It's not all clear, according to the liberal site DailyKos, but they throw cold water on Murphy's conservative GOP challenger Evan Feinberg.
From their election roundup this morning:
• PA-18: Damn, that's a lot of bunsen burners. The American Chemistry Council, a lobbying group, is going up with a half-million dollar ad buy on behalf of GOP Rep. Tim Murphy. Murphy's not exactly endangered, seeing as his district is still 55-44 McCain, just like it was under the old lines. Dave Catanese suggests there might be some concern about a primary challenge from former congressional staffer Evan Feinberg, but he seems pretty small-time. Rather, I'd surmise that a trade organization like the ACC will often look to support its friends independently of any actual electoral need. Take a look at some of the other incumbents they're running ads for: Except for Scott Brown, none are at all vulnerable.