SIMI VALLEY, Calif. (AP) — Several of Donald Trump’s rivals stepped up their attacks against him in Wednesday’s second Republican presidential debate. They were urgently trying to dent the former president’s commanding primary lead during an event that often seemed like an undercard without him. The debate’s tone was far removed from the campaign’s overall tone. Trump has dominated the field with attacks on his rivals and democratic institutions as well as his grievances about the criminal indictments and civil cases targeting him and his businesses. The moderators did not ask about the indictments or why the people onstage were better qualified than Trump.