Kamala Harris entered the final full month of the US presidential election campaign vastly outspending Donald Trump, as both candidates put tens of millions of dollars into television ads ahead of the Nov. 5 contest, according to financial disclosures filed on Sunday. The campaigns are racing the final stretch of an extremely tight presidential contest, with many polls showing the two candidates neck-and-neck, including in battleground states that could determine the winner. She disclosed to the Federal Election Commission spending of $270 million last month, largely on ads. Former Republican President Trump's similarly ad-dominated spending totaled $78 million during the...