The United States presidential election is affecting how some people celebrate Halloween. Halloween takes place on the last day of October. Many people celebrate by wearing costumes and masks to make themselves look like somebody else. This year, popular masks include those that look like the two major candidates for president -- Hillary Clinton and Donald Trump. Spirit Halloween is a company that sells Halloween costumes. It paid for a survey of 2,000 adults. It reported that 55 percent said they would choose the Trump mask and 45 percent the Clinton mask. Spirit Halloween said the number one reason people gave for choosing a Trump mask was to be funny. The top reason people gave for choosing a Clinton mask was because they liked her. Some stores are selling a Halloween set with one Clinton mask and one Trump mask. The set sells for about $38.