This is not really accurate reporting.
Here's a tally of Publix spending on politicians
Money to congressional candidates: 2016 Cycle
Dems: Dems: $109,871 $109,871
Repubs: Repubs: $539,674 $539,674
Others: Independents: $0 $0
Incumbents: Total to Members: $635,847 $635,847
Non-Incumbents: Total to All Candidates: $13,698 $13,698
So the GOP is much more hurt by the cessation of political funding by Publix.
https://www.opensecrets.org/orgs/toprecips.php?id=D000028488&type=&sort=&cycle=2016