That would be Martin O'Malley
...Democratic governor of Maryland and aspiring presidential candidate, known locally as The One-Man Economic Wrecking Crew. O'Malley was elected to his second term driven by union support and near-Stalinesque vote margins in Baltimore city (82%) and Prince George's County (88%)...
, the former governor of Maryland. Chances are you wouldn't know him if you tripped over him, yet he could become the accidental front-runner if
Hillary Clinton... sometimes described as
America's Blond Eminenceand at other times as Mrs. Bill, never as
Another Walter Q. Gresham...
's campaign continues to implode.
The disclosure of Clinton's 
secret email account as secretary of state has not only severely damaged her presidential prospects, but exposed the Democrats' complete lack of a bench -- assuming U.S. Sen. Elizabeth Warren stays out of it. A race without Hillary would be like the Wizard of Oz without Dorothy. Sure, the Tin Man's a nice guy, but not exactly great box office.
Democrats are hoping Clinton's email problem goes away, but that seems very unlikely. That leaves the Democratic D-list of presidential hopefuls, led by O'Malley.
The two-term governor has been traveling around the country for the last few years to boost his presidential prospects -- sort of a Democratic version of Willard
MittRomney
...former governor of Massachussetts, the Publican nominee for president in 2012. He is the son of the former governor of Michigan, George Romney, who himself ran for president after saving American Motors from failure, though not permanently. Romney has a record as a successful businessman, heading Bain Capital, and he rescued the 2002 Winter Olympics from the midst of bribery and mismanagement scandals....
-- but because of Clinton, no one has taken him too seriously.