An unknown hacker vandalized the internet site for the Gallop Organization just before today’s presidential primary elections but didn’t change survey data from one of the nation’s oldest polling companies. Gallop said none of its poll data was compromised, because its vandalized website at www.gallop.com won’t be connected to internal computers that store polling results until September 1st. That’s when Gallop plans to make available through its website 65 years of data. Gallop results are relied upon heavily by campaigns and political journalists.