Andy Harris (REP)          

Percent: 59.41%            

Votes: 246,356 

Blane H. Miller, III (DEM)            

Percent: 37.37%            

Votes: 154,985 

Joshua W. O'Brien (LIB)              

Percent: 3.05% 

Votes: 12,664  

Others 

Percent: 0.16% 

Votes: 675        

Total votes: 414,680

Results by county

Baltimore County        

Andy Harris (REP)          

Percent: 60.11%            

Votes: 20,211  

Blane H. Miller, III (DEM)            

Percent: 36.78%            

Votes: 12,367  

Joshua W. O'Brien (LIB)              

Percent: 2.94% 

Votes: 987        

Others  0.18%   59         

Total votes: 33,624

Caroline County           

Andy Harris (REP)          

Percent: 69.62%            

Votes: 11,082  

Blane H. Miller, III (DEM)            

Percent: 27.27%            

Votes: 4,341     

Joshua W. O'Brien (LIB)              

Percent: 2.95% 

Votes: 470        

Others 

Percent: 0.16% 

Votes: 25           

Total votes: 15,918

Cecil County   

Andy Harris (REP)          

Percent: 64.37%            

Votes: 32,647  

Blane H. Miller, III (DEM)            

Percent: 31.88%            

Votes: 16,171  

Joshua W. O'Brien (LIB)              

Percent: 3.63% 

Votes: 1,843     

Others 

Percent: 0.11% 

Votes: 58           

Total votes: 50,719

Dorchester County     

Andy Harris (REP)

Percent: 59.14%            

Votes: 9,709     

Blane H. Miller, III (DEM)            

Percent: 38.40%            

Votes: 6,305     

Joshua W. O'Brien (LIB)              

Percent: 2.36% 

Votes: 387        

Others 

Percent: 0.10% 

Votes: 17           

Total votes: 16,418

Harford County             

Andy Harris (REP)          

Percent: 57.42%            

Votes: 83,858  

Blane H. Miller, III (DEM)            

Percent: 39.00%            

Votes: 56,960  

Joshua W. O'Brien (LIB)              

Percent: 3.38% 

Votes: 4,934     

Others 

Percent: 0.20% 

Votes: 299        

Total votes: 146,051

Kent County    

Andy Harris (REP)          

Percent: 52.27%            

Votes: 5,649

Blane H. Miller, III (DEM)            

Percent: 44.84%            

Votes: 4,846     

Joshua W. O'Brien (LIB)              

Percent: 2.80% 

Votes: 303        

Others 

Percent: 0.09% 

Votes: 10           

Total votes:10,808

Queen Anne's County 

Andy Harris (REP)          

Percent: 64.57%            

Votes: 20,362  

Blane H. Miller, III (DEM)            

Percent: 32.16%            

Votes: 10,141  

Joshua W. O'Brien (LIB)              

Percent: 3.11% 

Votes: 980        

Others 

Percent: 0.16% 

Votes: 51           

Total votes: 31,534

Somerset County        

Andy Harris (REP)          

Percent: 62.73%            

Votes: 6,057     

Blane H. Miller, III (DEM)            

Percent: 35.01%            

Votes: 3,380     

Joshua W. O'Brien (LIB)              

Percent: 2.16% 

Votes: 209        

Others 

Percent: 0.09% 

Votes: 9             

Total votes: 9,655

Talbot County 

Andy Harris (REP)          

Percent: 52.13%            

Votes: 11,694  

Blane H. Miller, III (DEM)            

Percent: 45.52%            

Votes: 10,211  

Joshua W. O'Brien (LIB)              

Percent: 2.21% 

Votes: 495        

Others 

Percent: 0.14% 

Votes: 32           

Total votes: 22,432

Wicomico County

Andy Harris (REP)          

Percent: 54.83%            

Votes: 24,946  

Blane H. Miller, III (DEM)            

Percent: 42.30%            

Votes: 19,248  

Joshua W. O'Brien (LIB)              

Percent: 2.73% 

Votes: 1,244     

Others 

Percent: 0.13% 

Votes: 61           

Total votes: 45,499

Worcester County       

Andy Harris (REP)          

Percent: 62.90%

Votes: 20,141  

Blane H. Miller, III (DEM)            

Percent: 34.40%            

Votes: 11,015  

Joshua W. O'Brien (LIB)              

Percent: 2.54% 

Votes: 812        

Others 

Percent: 0.17% 

Votes: 54           

Total votes: 32,022