In order to influence the election, the US agencies undertook a campaign of writing ten million letters, made numerous short-wave radio broadcasts and funded the publishing of books and articles, all of which warned the Italians of what was believed to be the consequences of a communist victory. Overall, the US funneled $10 million to $20 million () into the country for specifically anti-PCI purposes. The CIA also made use of off-the-books sources of financing to interfere in the election: millions of dollars from the Economic Cooperation Administration affiliated with the Marshall Plan and more than $10 million in captured Nazi money were steered to anti-communist propaganda.