The Green leader wants executives to hold greater control over policy direction after a conference resolution triggered fierce internal revolt.
Senior figures call for constitutional reform after just 1,022 conference votes defined Zionism as racism and backed a single Palestinian state.
The Green leader is pitching an emergency brake on rents while fighting to protect party momentum against a left-leaning Labour government.
The Green Party leader will stand in the London constituency, setting up a high-stakes test for Andy Burnham's Labour government.
