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 BidenBiden boards train home to Delaware after Trump's inauguration Overnight Tech: Meet the key players for Trump on tech | Patent chief staying on | Kerry aide goes to Snapchat | Uber's M settlement Biden's farewell message: Serving as VP has been my 'greatest honor' MORE will headline a joint campaign appearance and fundraiser for Democratic nominee Chris CoonsChris CoonsTrump, Democrats can bridge divide to make college more affordable Senate Dems urge Sessions to abstain from voting on Trump’s Cabinet picks Booker to vote against Tillerson 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.