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Megadonor

Mark Heising

Managing Director · Medley Partners Llc · Atherton, CA · Strong Democrat
Total Contributions
$45.2M
1100 contributions
Avg Contribution
$41K
Committees Funded
25
Election Cycles
4
Megadonor (Strong Democrat). $45,211,936 total across 232 committees over 4 election cycles. Largest recipient: Smp ($12,689,000). $36,422,120 to PACs/Super PACs. $1,594,000 directly to candidates.
🏛️ Party Direction
$4.6M DEM
$0 GOP
📈 Contribution Timeline
2026
$8.5M
200 contribs
2024
$25.2M
500 contribs
2022
$8.8M
200 contribs
2020
$2.7M
200 contribs
🏆 Electoral Scoreboard
Mixed record: 14 wins, 12 losses (54% success rate) across decided races. Outcomes attributed via PAC IE targeting are approximate — the donor funds the PAC, not specific races.
54%
Success Rate
14
Wins
12
Losses
23
Pending
Candidate
State
Office
Cycle
Amount
Channel
Result
Mcadams
UT
House
2026
$1.2M
via Welcomepac
Pending
Perry
PA
House
2026
$1.2M
via Welcomepac
Pending
President
2024
$47K
Direct
Pending
Avlon
NY
House
2024
$1.2M
via Welcomepac
Pending
Lalota
NY
House
2024
$1.2M
via Welcomepac
Pending
Fox
FL
House
2024
$1.2M
via Welcomepac
Pending
Cooke
WI
House
2024
$1.2M
via Welcomepac
Pending
Stelson
PA
House
2024
$1.2M
via Welcomepac
Pending
Gluesenkamp Perez
WA
House
2024
$1.2M
via Welcomepac
Pending
Rollins
CA
House
2024
$1.2M
via Welcomepac
Pending
Frisch
CO
House
2024
$1.2M
via Welcomepac
Pending
Perry
PA
House
2024
$1.2M
via Welcomepac
Pending
Reagan
CO
House
2024
$1.2M
via Welcomepac
Pending
Golden
ME
House
2024
$1.2M
via Welcomepac
Pending
Peltola
AK
House
2024
$1.2M
via Welcomepac
Pending
DEM Senate races
—
Senate
2024
$454K
via Democratic Future Lea
14W-12L
Rollins
CA
House
2022
$1.2M
via Welcomepac
Pending
Calvert
CA
House
2022
$1.2M
via Welcomepac
Pending
📋 Committee Breakdown
Committee
Type
Total
Count
Cycles
Smp
Super PAC
$12.7M
13
2020, 2022, 2024, 2026
Hmp
Hybrid PAC — Nonqual
$6.2M
12
2022, 2024
Harris Victory Fund
PAC — Nonconnected
$3.3M
24
2020, 2024
Dnc Services Corp / Democratic National Commi
Party — Qualified
$2.3M
38
2020, 2022, 2024
The Bench
Hybrid PAC
$2.0M
9
2024, 2026
Md Pac
Hybrid PAC
$2.0M
4
2026
Dccc
Party — Qualified
$1.9M
29
2020, 2022, 2024, 2026
State + Local Election Alliance
Hybrid PAC
$1.5M
7
2024, 2026
Dscc
Party — Qualified
$1.3M
23
2020, 2022, 2024, 2026
Welcomepac
Hybrid PAC — Nonqual
$1.2M
5
2024
Jeffries Victory Fund
PAC — Nonconnected
$1.2M
5
2024
Project 218
Super PAC
$1.2M
5
2024
Harris Action Fund
PAC — Nonconnected
$750K
5
2024
Democracy Engine, Inc., Pac
PAC — Nonconnected
$733K
9
2020, 2022, 2024
Biden Action Fund
PAC — Nonconnected
$500K
2
2020
Democratic Future Leadership Fund
PAC — Nonconnected
$454K
5
2024
Open Democracy Pac
Hybrid PAC
$225K
9
2022, 2024
Majority Fund
PAC — Nonconnected
$206K
2
2026
Lone Star Rising Pac
Super PAC
$200K
2
2026
Democratic Grassroots Victory Fund
PAC — Nonconnected
$200K
2
2022
Nancy Pelosi Victory Fund
PAC — Nonconnected
$200K
2
2022
One Giant Leap Pac
Super PAC
$170K
6
2026
Democracyfirst Pac
PAC — Qualified Nonc
$150K
5
2024
Dscc Vice Chair Padilla Fund
PAC — Nonconnected
$125K
5
2024
Alaska Democratic Party
Party — Qualified
$124K
15
2024