Which super PACs did Stephen Mandel Jr. fund in 2024?

House Majority PAC ($2.5M), Future Forward (FF PAC) ($2.5M), Forward Majority Action ($2.0M), DSCC ($83K), DCCC ($83K).

Which candidates did Stephen Mandel Jr.'s money end up backing or attacking in 2024?

for Kamala Harris (President, about $2.3M, lost); against Austin Theriault (Maine 2nd District, about $87K, won); against Tom Barrett (Michigan 7th District, about $76K, lost). Amounts are the donor's share of each group's spending.

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Donor

Stephen Mandel Jr.

Individual

Founder, Lone Pine Capital · Connecticut

14 reported gifts; 6 recipient groups listed, as reported to the FEC by the groups that received them.

Backed losers

Stephen Mandel Jr. gave $7.3M to super PACs and other outside groups in the 2024 federal elections, and 100% of it helped Democrats (FEC filings with varying coverage dates; the most common larger-campaign cutoff is Dec 31, 2024). Among dollars with a matched election-stage result, 24% were on the winning side ($1.0M won, $3.2M lost). $63K had no matched result and is excluded.

Gave to outside spenders

$7.3M

100% of it helped Democrats

Winning share of scored dollars

24%

$4.2M scored (58% of gifts)

Spent on the losing side

$3.2M

Not allocated or result unknown

$3.1M

$3.0M not allocated to tracked outside spending; $63K has no matched result. Neither is cash on hand.

Where the checks went

A person writing checks from their own fortune. Each gift is split the way the group that received it split its spending between winners and losers, so a $10M check to a group that spent 80% on losers counts as $8M on the losing side.

✓ Backed the winner or attacked the loser ✗ Backed the loser or attacked the winner Result not matched

Group	Gave	Won / lost
House Majority PAC $634K not allocated to tracked outside spending	$2.5M	$1.0M / $856K
Future Forward (FF PAC) $278K not allocated to tracked outside spending	$2.5M	$0 / $2.2M
Forward Majority Action $1.9M not allocated to tracked outside spending	$2.0M	$0 / $90K
DSCC $70K not allocated to tracked outside spending	$83K	$8K / $5K
DCCC $65K not allocated to tracked outside spending	$83K	$9K / $7K
Democracyfirst PAC $19K not allocated to tracked outside spending	$25K	$0 / $6K

The trail

What the money bought

The candidates Stephen Mandel Jr.'s money was spent for or against, pro-rated by Stephen Mandel Jr.'s share of each group's funding.

Candidate	Race	Spending	Their share	Paid off?
Kamala Harris	President	Supporting	$2.3M	✗ No
Austin Theriault	Maine 2nd District	Attacking	$87K	✓ Yes
Tom Barrett	Michigan 7th District	Attacking	$76K	✗ No
Sandy Smith	North Carolina 1st District	Attacking	$74K	✓ Yes
Scott Baugh	California 47th District	Attacking	$73K	✓ Yes
John Duarte	California 13th District	Attacking	$68K	✓ Yes
Ryan E. Mackenzie	Pennsylvania 7th District	Attacking	$66K	✗ No
Anthony P. D'Esposito	New York 4th District	Attacking	$66K	✓ Yes
Mike Garcia	California 27th District	Attacking	$66K	✓ Yes
Michelle Steel	California 45th District	Attacking	$63K	✓ Yes
Rob Bresnahan Jr.	Pennsylvania 8th District	Attacking	$62K	✗ No
John James	Michigan 10th District	Attacking	$61K	✗ No

Individual as classified from the FEC entity type and public reporting.

Questions people ask

How much did Stephen Mandel Jr. spend on the 2024 elections, and did it win?: Stephen Mandel Jr. gave $7.3M to super PACs and other outside groups in the 2024 federal elections, and 100% of it helped Democrats (FEC filings with varying coverage dates; the most common larger-campaign cutoff is Dec 31, 2024). Among dollars with a matched election-stage result, 24% were on the winning side ($1.0M won, $3.2M lost). $63K had no matched result and is excluded.
Which super PACs did Stephen Mandel Jr. fund in 2024?: House Majority PAC ($2.5M), Future Forward (FF PAC) ($2.5M), Forward Majority Action ($2.0M), DSCC ($83K), DCCC ($83K).
Which candidates did Stephen Mandel Jr.'s money end up backing or attacking in 2024?: for Kamala Harris (President, about $2.3M, lost); against Austin Theriault (Maine 2nd District, about $87K, won); against Tom Barrett (Michigan 7th District, about $76K, lost). Amounts are the donor's share of each group's spending.