Elon Musk is diving headfirst back into politics, and Tesla investors are not happy about it. For Tesla investors and analysts who have already witnessed the stock decline 22% this year, Musk wading back into the political fray is the last thing they want to see. In a note on Tuesday, Ives called on Tesla's board of directors to act and set "ground rules" for Musk's political involvements. Shares have tended to fall when Musk is more focused on politics, while rising when he has shown a public commitment to Tesla. Tesla shareholder and frequent Musk critic Ross Gerber also weighed in on Monday, saying that "no one wants the Elon First party" and accusing Tesla's board of failing to rein Musk in.