the focus for some of them shifting from criticism of president trump to more pointed attacks on each other. peter doocy is in indianapolis tonight. joe biden just told donors that the next democratic debate in detroit, it s no more mr. nice guy explaining i m not going to be as polite this time. what did you mean when you said you re not going to be as polite in the next debate? we ll see. biden is hinting hill challenge kamala harris just like she challenged him in the first match up telling donors it s because this is the same person who asked me to come to california and nominator in her convention. nobody disputes that biden went to the golden state. it s great to be back in california. just one thing, a harris campaign spokesman points out he did not nominator, not how it works. he didn t even endorse her until months later. the front runner biden is also trying to keep a critical cory booker at bay saying of