She said Foley's campaign violated state laws requiring candidates to inform the commission within 48 hours when expenditures exceed 90 percent of $6.25 million, and when the campaign receives more than $6.25 million.
The laws are connected to the state's public campaign financing program.
Foley isn't participating in the program, but Democratic rival Dan Malloy is. Malloy received $6 million in public campaign funds after raising a required $250,000 in contributions.
Foley's campaign called the complaint "frivolous" and said it has complied with all SEEC regulations.