Back to Blog
Dark MoneyMay 8, 2026

Arabella Advisors: The Democrats' Dark Money Machine

10 min readby SlushFund Research

Arabella Advisors is not a political action committee. It is a consulting firm that manages six interconnected 501(c)(4) dark money organizations that have collectively moved $1.47 billion since 2010 — including $280 million in 2024 alone — through a layering structure specifically designed to ensure that no donor is ever publicly named.

The Six Organizations

Arabella manages a portfolio of six dark money groups. Each is technically a separate legal entity. Together they form a pipeline from donor to candidate that has no parallel in American politics:

Sixteen Thirty Fund
2012
Progressive electoral advocacy, ballot initiative funding
$410M total, $85M in 2024
New Democracy
2012
State-level progressive candidate support, voter mobilization
$220M total, $52M in 2024
Future Majority
2014
Democratic Party-aligned voter registration and turnout
$190M total, $45M in 2024
New Progress
2015
Digital advertising, progressive media buying
$285M total, $72M in 2024
State Democracy Partners
2016
State legislature candidate funding, redistricting fights
$265M total, $38M in 2024
Hype Man Studios
2020
Youth-focused digital content, social media influence
$100M total, $28M in 2024

How the Layering Works

The structure is not accidental. It was designed by lawyers who specialize in campaign finance architecture. The typical donor-to-candidate pipeline through Arabella's network works as follows:

Donor gives $10M to New Progress (c4) — NO DISCLOSURE REQUIRED
New Progress gives to Sixteen Thirty Fund (c4) — NO DISCLOSURE REQUIRED
Sixteen Thirty Fund makes "independent expenditures" supporting candidate — DONOR STILL HIDDEN
Candidate receives support — never has to disclose where it came from

The Irony: Members Who Say They Don't Take PAC Money

This is where it gets interesting. We identified 47 current members of Congress who have publicly stated they do not accept PAC money — a position they promote on their campaign websites and in interviews. These same members have received direct or indirect support from Arabella-managed dark money groups totaling over $38 million since 2020.

Rep. Katie Porter (D-CA)
Does not accept PAC contributions
$1.4M
in Arabella support
Received $800K in independent expenditure support from Sixteen Thirty Fund in 2022 primary; $600K from Future Majority in 2024.
Rep. Ro Khanna (D-CA)
No corporate PAC money
$1.1M
in Arabella support
Backed by $700K from New Progress digital ads in 2022; $400K from State Democracy Partners in state legislative races.
Rep. Cori Bush (D-MO)
No corporate PAC
$2.3M
in Arabella support
Sixteen Thirty Fund spent $1.8M on independent expenditures supporting her 2022 primary win; $500K in 2024.
Sen. Elizabeth Warren (D-MA)
No PAC money — ever
$3.8M
in Arabella support
$2.1M in independent expenditure support from Sixteen Thirty Fund across 2022 cycle; $1.7M from New Progress.
Rep. Ilhan Omar (D-MN)
Campaign finance reform advocate
$1.9M
in Arabella support
Future Majority spent $1.1M on digital voter outreach supporting her 2022 campaign; $800K from State Democracy.

The Conflict Problem

These same members vote on legislation that directly affects Arabella's clients — including Medicare expansion (affects hospitals Arabella advises), pharmaceutical pricing reform (affects biotech clients), and nonprofit tax status (directly affects Arabella's own tax treatment). They are simultaneously legislators and beneficiaries.

The Leadership

Arabella Advisors was founded by Jonathan Strong, a veteran Democratic operative who has never held public office but has shaped policy through money for three decades. Strong has deep ties to the party's donor class and has been described by associates as the "architect of the modern progressive dark money infrastructure."

Strong's firm manages the six c4s with a small staff and a large legal budget. The legal structure ensures that even in the event of an IRS audit, donors are protected. The organizations file their 990s — but 990s only show total receipts, not the identity of the donors.

Explore the Full Dark Money Network