Joe Biden's history of presidential nomination

Joe Biden has just become the 46 President of the United States. Twice before he ran for the Democrat presidential nomination twice and both times been defeated soundly. 

Born in 1942 he has spent most of his working life in the US Senate, except for the eight years as Vice President in the Obama administration. What does his record in the Senator, and his previous attempts at the presidency tell us about what kind of a President he might make?