It was officially formed on August 29, 2000, for the stated purpose of providing Delaware voters with an alternative to the Republican and Democratic parties.

The Independent Party of Delaware was founded on August 29, 2000, by Floyd McDowell and Frank Sims.

[7] In 2008, the party again gave its ballot line to the independent presidential campaign of Ralph Nader; he received 2,401 votes.

One candidate for State Senate, running in a district with no major party opposition, received 20.1% of the vote.

In 2014, the party ran David Graham for attorney general of Delaware against Matthew P. Denn, Ted Kittila, Catherine Damavandi and John Machurek and he received 4,879 for 2.1% of the vote.