Del. Code tit. 15, § 3109

Notice of primary elections shall at a minimum be given by publication of a notice of election in a daily newspaper of general circulation during 3 of the 10 days prior to a primary election with the last publication being the day before the aforesaid primary, or in the last issue of a weekly newspaper printed in a county before the aforesaid primary. Such notice shall also be, posted on the State’s, the State Election Commissioners’ and the Department’s websites.