In the April 1, 2014, DC primary barely 25% of registered voters participated. Thus while the "winner" of the election is credited to have received 44.24% of the vote, that represents less than 10% of the total number of registered voters.
There are two solutions - both involve instant run-off in combination with either open primaries or making City offices non-partisan. As I don't expect the local Democrat party to just relinquish the power it has by creating a non-partisan form of governance, open primaries might have more promise in DC.
The chart below list turnout in all the primary elections in DC since 1982 -
Registered | Voted | Turnout | ||||||||||||||
September 14, 1982 Primary |
327,874
|
120,234
|
36.7%
|
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September 9, 1986 Primary |
243,372
|
85,094
|
35.0%
|
|||||||||||||
September 11, 1990 Primary |
262,537
|
135,635
|
51.7%
|
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September 13, 1994 Primary |
304,387
|
149,457
|
49.1%
|
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September 15, 1998 Primary |
298,265
|
95,624
|
32.1%
|
|||||||||||||
September 10, 2002 Primary |
301,593
|
104,001
|
34.5%
|
|||||||||||||
September 12, 2006 Primary |
321,087
|
109,781
|
34.2%
|
|||||||||||||
September 14, 2010 Primary |
370,416
|
137,586
|
37.1%
|
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April 1, 2014 Primary |
369,035
|