By BY KATIE GLUECK, ANNIE KARNI AND ALEXANDER BURNS U.S. https://ift.tt/3baWFs3 The national political conventions over the last two weeks set the battle lines for the election’s remaining weeks. Joe Biden is focusing on President Trump’s virus management, while the president is hammering a law-and-order message. New York Times Presidential Election of 2020, Polls and Public Opinion, United States Politics and Government, Police Reform, Political Advertising, Demonstrations, Protests and Riots, Coronavirus (2019-nCoV) August 29, 2020 at 12:18AM