The FBI is continuing to investigate the San Diego conspiracy that saw consultant Ravi Singh charged in a scheme to help a Mexican businessman funnel money into the city's mayoral elections. 

Now, government transparency groups are getting in on the case. The Sunlight Foundation published a piece Friday that includes a database of Singh's clients. The D.C.-based consultant has a GOP-heavy client roster, according to the data culled from FEC reports. 

Records show he was working for the California state GOP in 2013 as well as Republican House members from New Jersey, Illinois, Michigan and Florida. The group also catalogued his clients from 2008-12. 

Given the gravity of the charges against Singh, holding onto his clients will be a challenge. 

Tags: Ravi Singh