Sen. Russ Feingold (D) was the star attraction at a fundraiser Tuesday night benefiting the YearlyKos convention, an offshoot of the influential liberal blog DailyKos.

Feingold was joined by Reps. Brad Miller (D-N.C.), John Hall (D-N.Y.), Earl Blumenauer (D-Ore.), and Jerry McNerney (D-Calif.) — all of whom may have been shown up by a “surprise” guest, Sen. Jon Tester (D-Mont.).

Feingold and Tester are two of the favorite politicians of the Democratic “net roots.” Many liberal online activists were disappointed when Feingold decided not to seek the presidency in 2008, but they were thrilled when underdog Tester unseated then-Sen. Conrad Burns (R-Mont.) in November.

The “DKos” community used the Mott House, a building adjacent to the Democratic Senatorial Campaign Committee headquarters and often used for DSCC functions, for its $35-a-person reception. The annual convention is scheduled for Aug. 2-5 in Chicago.

— Nicole Duran