The two candidates for the 51st Assembly district are Luis Lopez and Wendy Carrillo. Lopez has run for this seat before (losing to Gomez in 2012) and lived in the District for decades while Carrillo moved into the district when she ran unsuccessfully in the #CA34 special election.
Interestingly, despite the carpet-bagger concerns Carrillo has been endorsed by several Democratic Party establishment figures, including now-U.S. Rep. Gomez, California Senate Majority leader Kevin De Leon (who represents the area in the California Senate) and Jose Huizar who represents sections of the assembly district in the Los Angeles City Council.
As an openly gay man running for a state legislative seat, Lopez has been endorsed by several LGBT organizations (Equality California, HONOR Pac, the Victory Fund and the California LGBT Legislative Caucus).
Lopez and Carillo have faced off in multiple debates around the district. There doesn't appear to be any public polling in the race. I have already voted for my preferred candidate by mail. The election is Tuesday December 5th.