Psst, Scott Walker is running for president. He doesn't officially announce until Monday, but Politico reports that an apparently mistaken tweet—it's here, for now—seems to have jumped the gun by three days. It shows an image of Walker on stage with the hard-to-misinterpret words, "Scott Walker Is Running For President." The tweet is no longer in the campaign's official feed, which is instead teasing supporters with lines like, "Scott Walker is making a big announcement on Monday and you're invited!" Bloomberg spotted it, too, and campaign officials haven't explained what happened. (More Scott Walker stories.)