Republicans who buck the GOP can always count on glowing treatment from reporters. The supposed “big tent” of the Dems is actually quite small. Most disputes in it are not between the “left” and the “center,” but between the far left and the left. “Conservative Democrats” are an endangered species, and those like Manchin who make even a nod in that direction can expect severe scrutiny from the media. It demands ideological diversity in the GOP, but craves uniformity among Democrats.