2012Final results
2012 election for Maryland's 6th District
U.S. House · Maryland
John K. Delaney (D) won with 58.8% of the vote, defeating Roscoe G. Bartlett (R) by 20.9 points.
John K. DelaneyDemocrat · winner
58.8%181,921
Roscoe G. BartlettRepublican
37.9%117,313
Nickolaus MuellerLibertarian
3.2%9,916
309,549 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The seat over time
D − R margin in this seat's races around 2012
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
Money in this race
Each line compares the two campaigns on one scale.
John K. DelaneyRoscoe G. Bartlett
$4.6M
Raised by the campaign
$1.2M
$4.6M
Spent by the campaign
$1.4M
$3.1K
Cash on hand
$28.6K
Campaign money: FEC, through Dec 31, 2012.
Source: FEC campaign filingsUpdated Dec 31, 2012