Former President Bill Clinton weighed into a contentious Democratic congressional primary Monday, announcing his endorsement of financier John Delaney.

Former President Bill Clinton (FREDY BUILES/REUTERS)

Delany is locked in a heated contest with state Sen. Rob Garagiola (Montgomery) for the party nod in the seat currently held by Rep. Roscoe Bartlett (R); Air Force doctor Milad Pooran and two others are also running for the Democratic nod.

“John Delaney is a lifelong Democrat who has real life job creation experience, he’s a progressive business leader with a long record of civic activism and charitable causes,” Clinton said in a statement released by Delaney’s campaign. “His commitment to equality, economic growth and fairness will make him an effective advocate for the middle class, a strong advocate for job creation, and a trusted ally for reform.”

Delaney raised more than $800,000 for Hillary Clinton’s 2008 presidential campaign, and has donated to a host of other Democratic candidates and causes over the years. (Delaney also, as Garagiola’s camp has pointed out, donated money to Republican Rep. Andy Harris’s (Md.) 2010 campaign, which could make Clinton’s statement that Delaney is “a lifelong Democrat” useful.)

Dee Dee Myers, Clinton’s former press secretary, has already endorsed Delaney and cut an ad for him. Garagiola, for his part, has won the support of several major unions and key elected leaders in Maryland.