According to Politico Playbook on Wednesday, things are really, really bad for the Republican midterm convention in Dallas, Texas. To support their claim of disaster for that convention, the Politico team of Adam Wren, Dasha Burns, Will Steakin, and Megan Messerly cited — wait for it —conveniently unnamed sources to back up their premise of doom and gloom.The unnamed sources made their invisible cameos in “‘The vibes are very bad’ in Texas,’” only to immediately disappear into the political ether to avoid anything resembling a fact check of their whispered claims: