National Democrats are sending in some serious firepower against Tea Party favorite Christine O'Donnell in Delaware's Senate contest. 

Both President Obama and Vice President Joe BidenJoe BidenThe Hill's 12:30 Report Dems see huge field emerging to take on Trump Lawmakers send McCain well wishes after cancer diagnosis MORE will headline a joint campaign appearance and fundraiser for Democratic nominee Chris CoonsChris CoonsDemocrats go in for the kill on ObamaCare repeal Funeral for the filibuster: GOP will likely lay Senate tool to rest Overnight Regulation: Labor groups fear rollback of Obama worker protection rule | Trump regs czar advances in Senate | New FCC enforcement chief MORE next week. It's the first joint campaign appearance the two have made for a Democratic candidate so far this election cycle. 

The two will host an event next week in Wilmington where tickets will start at $100, according to the Delaware News Journal

Coons is running to fill Biden's former Senate seat, and the vice president has already made two campaign appearances for him since Coons captured the Democratic nomination last month.  

A joint showing from both Obama and Biden might not be welcome in some of the most contested Senate races in 2010, but in heavily Democratic Delaware, it appears Coons isn't as worried about sharing a stage with both the president and vice president. 

The latest polling in the race has Coons up double digits.