The unexpected victories of several prominent progressive Democrats this primary season, some backed by the Democratic Socialists of America (DSA), have sent shockwaves through the Democratic Party and raised concerns that the Democratic legislative platform will shift substantially left (see New York and Colorado Primary Elections Flash Conference Call, July 2, 2026).
While reflective of a generational shift inside the Democratic Party, we do not subscribe to the conventional view that these victories will translate into a leftist lurch. Rather, the slow mechanisms of legislating, combined with party leaders’ interest in making Democrats competitive in 2028, will create challenges for progressives to translate victories into immediate legislative action.
Primaries are rarely national news, and those voters who turn out for them are typically the most ardent of party supporters, not newcomers or tide-changing voters. Yet several recent contests have drawn tremendous scrutiny that investors should be aware of. Most prominent was Michigan—Abdul El-Sayed, a progressive politician and epidemiologist, narrowly defeated Democratic Representative Haley Stevens in Michigan’s Senate primary, hinging his platform on Medicare for All, universal childcare, and banning corporate money in politics. DSA-backed Melat Kiros, who scored the Democratic nomination for Colorado’s 1st Congressional District, ran on a similar platform, also advocating to abolish Immigration and Customs Enforcement (ICE). DSA candidates also swept several contests in New York.
The reality is more complicated. The progressive shift in the base is undeniable; enthusiasm has concentrated there, and as progressives become more organized, there likely could be further DSA victories. However, the machinery of Congress will likely blunt immediate impact, and, politically, Democratic candidates for 2028 are waiting to see what happens in November before embracing progressive positions.
If Democrats win the majority in either chamber of Congress, they will appoint committee chairs to congressional committees based on seniority. Committee chairs set the legislative agenda, determine which bills receive consideration and whether to issue subpoenas, and steer the topics and timing of congressional hearings. The likely chairs typically represent the center-left moderate faction of the party, so DSA candidates will need time to build coalitions, rise in ranks, and engage in the Democratic caucus more broadly before their legislative interests are reflected in committee action. This could take years, and it will require discipline on the part of candidates who previously did not have to coordinate with other politicians or soften views. Those progressive candidates with a coalition-building background, such as Darializa Chevalier in New York and Angie Nixon in Florida, would likely have more immediate impact.
The actual policy risk would also be blunted under a split Congress, where not many measures historically move. There will be lots of noise, but not much progressive action.
The two issues top on the progressive agenda epitomize this dynamic: Medicare for All and aggressive data center reforms.
Medicare for All
If Democrats capture one or both chambers in the midterms, we believe moderate members in key leadership roles will limit the momentum of more progressive proposals, like Medicare for All (see “Unpacking Democratic Healthcare Priorities Through Midterms and the Next Congress: Implications for Payors, Providers, and Pharma,” August 14, 2026). We do not expect a near-term overhaul of the Medicare system, as such reforms would face enormous political and legal challenges to enactment. We anticipate increased attention to the possibility of a public option if Democrats win both chambers of Congress and the White House in 2028 based on the proposals explored in a request for information (RFI) from Senate Democratic leadership. Even then, we do not foresee these proposals gaining significant legislative traction.
Data Centers
We do not expect the election of progressive Democrats to Congress to materially change the outlook for Congress to ban data centers nationwide. Instead, the Federal Energy Regulatory Commission (FERC) will be filling this void at the federal level by advancing its six show cause proceedings on large load interconnection, which we believe will benefit data centers by providing regulatory clarity region by region. In the likely absence of congressional intervention through 2028, we continue to believe that state officials will be the policymakers who are driving most reforms to place additional guardrails on new data centers, highlighted by Pennsylvania Governor Josh Shapiro’s (D) recent executive order and Texas Governor Greg Abbott’s (R) ongoing audit of new projects.
Even if progressive Democrats do not move the needle on a reform agenda, they could influence other Democratic priorities. If Democrats have a razor-thin majority, then progressive members will have power to block legislation or extract concessions from Democratic leadership. They also could thwart any compromises with the Trump administration on appropriations or spending determinations. Must-pass legislation, including the annual defense bill, and the appropriations process will serve as immediate bellwethers for progressive readiness and power to impact the legislative agenda.
