Trump aides argue no one energizes Republicans like the president, pointing to the throngs of thousands who wait in long lines to attend his rallies — he's held 17 since taking office. The aides say the White House is taking a two-pronged approach, sending Trump to mobilize the base while other officials, such as his daughter Ivanka, can generate local headlines and help with voters who may not like the president's aggressive style. The goal is to ensure that the occasional voters who turned out for Trump in 2016 cast ballots in the midterms.