Political attacks can get pretty rough these days, with campaigns accusing each other of dishonesty, cynicism, corruption — even of being Washington Nationals fans.

That was the crux of a tweet posted Wednesday by the U.S. Senate campaign of Missouri Democrat Jason Kander. It was about a photo posted on Twitter of a campaign volunteer for U.S. Sen. Roy Blunt, R-Mo., who Kander is trying to unseat.

The photo shows the young volunteer working at a Blunt campaign office while wearing a baseball cap with a curly “W” logo on it.

"A Washington Nationals hat is the perfect thing to wear to fit in at @RoyBluntMO headquarters," tweeted Kander campaign manager Abe Rakov, in an apparent reference to the Kander's claim that Blunt is a Washington insider.

One small problem: The “W” logo — which does in fact have the same general shape as the Washington Nationals' logo — was in this case the logo for Webster Groves High School. The Blunt campaign volunteer is a WGHS student who plays baseball for the school.

Oops.