Outside of New York, the firm has advised and done polling for numerous Democratic candidates running for state and federal office, most notably Kamala Harris in her 2024 presidential campaign.

In 1995, GSG was founded by Jonathan Silvan (CEO), Jefrey Pollock (President), and Jeffrey Plaut (Partner) as a boutique polling firm.

[13] According to the New York Times, Pollock was one of the key figures who advised Cuomo in the wake of the 2021 sexual harassment scandal that ultimately culminated in his resignation.

[14] A New York State attorney general report found that Pollock advised Cuomo to "express contrition" shortly after allegations against the governor became public.

[16] It has also done polling for New York House Representatives, including Joe Morelle,[17] Ritchie Torres,[18] Jerry Nadler,[19] and Pat Ryan.

[16] The firm has also done polling for Democratic candidates including Governors J.B. Pritzker,[29] Janet Mills,[30] and Josh Shapiro;[31] Senators Ed Markey and Jacky Rosen;[4] and Representatives Gabe Vasquez,[32] Sharice Davids,[33] and Steven Horsford.

The project aims to provide research that helps Democratic candidates, committees, and pundits develop messaging that the voting public is likely to find persuasive.

[42] In early 2021, GSG and four other large Democratic polling firms led an internal review of the factors that caused them to make certain inaccurate predictions ahead of the 2020 election.

[43] In 2022, GSG worked with the Center for American Progress Action Fund on a research project gauging voter attitudes toward the term "MAGA Republican".

This research, which found that most voters view the term negatively, was used by the Biden White House in composing a speech that was critical of Donald Trump and the "ultra MAGA agenda.

[46] GSG was reportedly hired by rideshare companies Uber and Lyft to conduct research in support of their position that drivers should be classified as independent contractors, not employees.

[4] Global Strategy Group has worked on social and political issues such as abortion access, gun safety, and criminal justice reform.

[61] GSG worked with Everytown again in 2022 on polling that found significant public support for an Illinois bill banning the sale of assault weapons and raising the state's gun-buying age to 21.

[64] In 2021, GSG and the Equal Justice Initiative released a study comparing media coverage of white and Black defendants in criminal cases.

Their report found that relatively few Black and Latino small business owners received federal loans compared to their white counterparts.

[76] In the face of an investigation by the New York Attorney General's office, GSG "paid $2 million for allegedly helping to steer money to private equity clients."