Scott Walker's spendthrift ways campaigning for president infamously put him more than $1 million in debt, according to The Wall Street Journal, here:
Mr. Walker’s FEC report shows he spent $6.4 million between the mid-July launch and the end of September. But those figures don’t include $200,000 in Mr. Walker’s reported outstanding bills or debts the campaign pushed past Oct. 1 – a number that raises the Walker debt to more than $1 million more than his cash on hand, according to the people familiar with Mr. Walker’s campaign finances. ...
When Tim Pawlenty ended his presidential campaign in August 2011, his campaign was $435,000 in the red. Mr. Pawlenty endorsed rival Mitt Romney, whose family and top campaign supporters and aides helped the former Minnesota governor retire his campaign debts by the next April.
Candidates who lose races can owe debt for years. Newt Gingrich still owes $4.6 million from his 2012 campaign. Al Sharpton owes $925,713 from his 2004 White House run.
Hillary Clinton infamously took until the end of 2012 to pay off $12 million she owed from her failed 2008 run for president. The $13.2 million she borrowed from herself she had to eat.