John Liu for State SenateFormer New York City Comptroller John Liu has defeated incumbent Sen. Tony Avella in the Democratic primary for the 11th state Senate district.
Liu's victory Thursday came two years after he lost to Avella in a previous primary campaign for Senate.
In both campaigns, Liu attacked Avella over his participation in the Senate's Independent Democratic Conference.
That group of breakaway Democrats split from the party for several years to support Republican control of the chamber.
The split ended earlier this year in a political deal brokered by Gov. Andrew Cuomo, but several IDC members faced a tough re-election challenge.
Their opponents say voters shouldn't tolerate Democrats siding with the Republicans in the age of President Donald Trump.