By Ballotpedia's Congressional team
MADISON, Wisconsin: Maryland had eight U.S. House seats on the ballot in 2012. Eight total incumbents sought re-election on November 6, 2012.
Maryland's 6th Congressional District switched partisan control in the general election. This was not unexpected, as redistricting made the district more Democratic, in terms of voter registration. John Delaney (D) won by over 20 percentage points to beat incumbent Roscoe Bartlett (R).
Here are the candidates who won election from Maryland.
| Members of the U.S. House from Maryland -- Partisan Breakdown
|
| Party
|
As of November 2012
|
After the 2012 Election
|
|
|
Democratic Party
|
6
|
7
|
|
|
Republican Party
|
2
|
1
|
| Total
|
8
|
8
|
Margin of victory for winners
There were a total of 8 seats up for election in 2012 in Maryland. The following table shows the margin of victory for each district winner, which is calculated by examining the percentage difference between the top-two vote getters. If the race was uncontested, the margin of victory is listed as 100%.
| District | Winner | Margin of Victory | Total Vote | Top Opponent |
|---|
| U.S. House, Maryland District 1 General Election
|  Andy Harris | 35.9% | 337,760 | Wendy Rosen |
| U.S. House, Maryland District 2 General Election
|  Dutch Ruppersberger | 34.5% | 295,940 | Nancy Jacobs |
| U.S. House, Maryland District 3 General Election
| John Sarbanes | 37.3% | 319,859 | Eric Delano Knowles |
| U.S. House, Maryland District 4 General Election
| Donna Edwards | 56.4% | 311,512 | Faith Loudon |
| U.S. House, Maryland District 5 General Election
| Steny Hoyer | 41.7% | 343,820 | Anthony O'Donnell |
| U.S. House, Maryland District 6 General Election
| John Delaney | 20.9% | 309,549 | Roscoe Bartlett |
| U.S. House, Maryland District 7 General Election
| Elijah Cummings | 55.7% | 323,818 | Frank Mirabile, Jr. |
| U.S. House, Maryland District 8 General Election
| Chris Van Hollen | 30.4% | 343,256 | Ken Timmerman |
National picture
Both chambers of the United States Congress remain split after the November 6, 2012 election. Democrats increased their majority in the U.S. Senate while cutting into the Republicans majority in the U.S. House.
Of the 435 candidates who won election to the U.S. House, 85 of them were challengers, which represents 19.5 percent of U.S. House members. Of those 85, 50 are Democratic and 35 are Republican. A total of 27 incumbents were defeated -- 10 Democratic and 17 Republican.
| 2012 United States House General Election Results
|
| Party
|
Total Winners
|
Incumbent Winners
|
Defeated Incumbents
|
Incumbent Re-Election Rate**
|
Non-Incumbent Winners
|
| Democratic
|
201
|
151
|
10
|
93.8%
|
50
|
| Republican
|
234
|
198
|
17
|
92.1%
|
35
|
| TOTALS
|
435
|
349
|
27
|
92.8%
|
85
|
| **Note: The incumbent re-election rate is calculated by dividing the total incumbents winners by the total incumbents who appeared on the general election ballot.
|
See also
Muir Boda
Michael Calpino
Bob Auerbach
