Maryland's 6th District was redrawn last year, adding in thousands of voters from Democratic-leaning Montgomery County. Bartlett's former district was not competitive; Sen. John McCain, R-Ariz., carried the district by 18 percentage points in 2008, despite losing the Free State by 26 points. But the district now has a distinct Democratic lean.
Delaney was the upstart winner of the Democratic primary earlier this month, defeating state Senate Majority Leader Rob Garagiola by a wide margin, despite the fact that many thought the district was redrawn to boost Garagiola's congressional hopes. The self-funding Delaney spent at least $2.2 million to win the primary, according to a report filed with the Federal Election Commission. He loaned himself more than $1.5 million. Garagiola, meanwhile, spent less than a third of Delaney's expenditures. (The latest FEC reports cover expenditures through March 31; the primary was on April 3.)
Bartlett, who will turn 86 in June, was first elected in 1993. Bartlett has just over $265,000 cash-on-hand, according to his most recent FEC report, slightly less than Delaney's balance as of March 31.