Hillary Clinton’s presidential campaign has built a field team in swing-states across the country that is larger than a U.S. Army brigade, giving her a huge advantage over Republican Donald Trump on Election Day.

Between Clinton’s presidential campaign, the Democratic National Committee and state party operations, campaign finance reports show Democrats employ 5,138 staffers across 15 battleground states.

Clinton is funding the army through tens of millions of dollars raised for state Democratic Parties across the country.

“Campaigns are won on the ground which is why we invested early to organize and register voters in this historic election,” said Lily Adams, a spokeswoman for Clinton’s campaign.