Which candidates did Benjamin Horowitz's money end up backing or attacking in 2024?

against Kamala Harris (President, about $1.7M, won); for Donald Trump (President, about $637K, won); against Kamala Harris (President, about $33K, lost). Amounts are the donor's share of each group's spending.

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Donor

Benjamin Horowitz

Individual

Co Founder and General Partner, A16z · Nevada

1 reported gift; 1 recipient group listed, as reported to the FEC by the groups that received them.

Backed winners

Benjamin Horowitz gave $2.5M to super PACs and other outside groups in the 2024 federal elections, and 100% of it helped Republicans (FEC filings with varying coverage dates; the most common larger-campaign cutoff is Dec 31, 2024). Among dollars with a matched election-stage result, 99% were on the winning side ($2.4M won, $33K lost). $0 had no matched result and is excluded.

Gave to outside spenders

$2.5M

100% of it helped Republicans

Winning share of scored dollars

99%

$2.4M scored (96% of gifts)

Spent on the losing side

$33K

Not allocated or result unknown

$101K

$101K not allocated to tracked outside spending; $0 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	How the group spent it	Won / lost
Right for America $101K not allocated to tracked outside spending	$2.5M		$2.4M / $33K

The trail

What the money bought

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

Candidate	Race	Spending	Their share	Paid off?
Kamala Harris	President	Attacking	$1.7M	✓ Yes
Donald Trump	President	Supporting	$637K	✓ Yes
Kamala Harris	President (primary)	Attacking	$33K	✗ No

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

Questions people ask

How much did Benjamin Horowitz spend on the 2024 elections, and did it win?: Benjamin Horowitz gave $2.5M to super PACs and other outside groups in the 2024 federal elections, and 100% of it helped Republicans (FEC filings with varying coverage dates; the most common larger-campaign cutoff is Dec 31, 2024). Among dollars with a matched election-stage result, 99% were on the winning side ($2.4M won, $33K lost). $0 had no matched result and is excluded.
Which super PACs did Benjamin Horowitz fund in 2024?: Right for America ($2.5M).
Which candidates did Benjamin Horowitz's money end up backing or attacking in 2024?: against Kamala Harris (President, about $1.7M, won); for Donald Trump (President, about $637K, won); against Kamala Harris (President, about $33K, lost). Amounts are the donor's share of each group's spending.