WASHINGTON — Defying his notorious stinginess, Donald Trump more than doubled his campaign spending last month compared to August. He burned through roughly $70 million as his standing in polls and among fellow Republicans dropped.

His Democratic opponent, Hillary Clinton, spent even more — almost $83 million.

New finance reports filed with the Federal Election Commission outlined their dramatically different approaches to the quest for the White House. Trump, while putting more money than ever into advertising, spent a fraction of the roughly $66 million Clinton poured into media buys.

Clinton’s payroll topped 800 people, coming in as her second-highest expense of the month, about $5.5 million. Trump paid roughly 350 employees and consultants. He has outsourced most of his on-the-ground voter contact to the Republican Party.