Over on the home page, a look at Rep. Bart Gordon, Democrat of Tennessee. At first glance, someone who’s been representing his district since the mid-1980s doesn’t seem like the kind of guy to sweat the current political environment. But take a seriously Republican-leaning district, coupled with some recent missteps on high-profile issues, and suddenly he’s looking like a prime candidate for the National Republican Congressional Committee’s target list in 2010 . . .