Last September, House Democrats did not hesitate to support US Rep. Matt Gaetz’s (R-FL) ultimately successful ploy to oust former speaker, Rep. Kevin McCarthy (R-CA). Now that House Speaker Mike Johnson (R-LA) is also facing an ouster — mainly by Rep. Marjorie Taylor Greene (R-GA) — Democrats are united behind the Louisiana lawmaker. “I’m not sure what goes into Marjorie’s analysis,” Johnson told Axios in a Thursday interview. READ MORE: Saving Johnson’s speakership may be ‘consequential’ for Republicans facing tough primary races The news outlet reports amid threats of removal, the speaker “h…