So also joining me tonight Karl Rove, Former Deputy Chief of Staff to President George W. Bush and of course Fox News Contributor. Karl good to have you with us tonight. Thank you Martha. You know I thought it was interesting when you think about Bernie Sanders base and you look at the Electorate, Joe Biden clearly a lot of voters coalesced around him on Super Tuesday across all kinds of demographics and groups. Do you think there is a way for Bernie Sanders to change that momentum at this point? Well, there is. I mean, the debate will - will give him a chance. His own conduct and his own campaign will give him a chance. The excitement that existed between Saturday and Tuesday for Joe Biden, we don't know how long that's gonna continue to that same degree. I doubt that