Topher Matthews has this column in “Greater Greater Washington”, an on-line news source for the Washington, D.C., area, advocating that city elections in Washington, D.C. (or at least mayoralty elections) use Instant-Runoff Voting, and that the primary be abolished. Washington, D.C., has partisan city elections. The city is overwhelmingly dominated by the Democratic Party. Yet, as the column points out, the general election in November always has a substantially higher turnout than the summer primary. See the column here.