AUGUSTA — The Maine Senate president’s leadership political action committee may be fined due to a campaign finance violation.

The Maine Democratic Party said Thursday that contributions and expenditures were inadvertently left off two quarterly reports from Senate President Justin Alfond’s “Alfond Business Community & Democracy PAC.”

The penalty for such a violation is more than $31,000, but the staff of the Maine Commission on Governmental Ethics and Election Practices is recommending a fine of only $1,500. The staff considered several factors, including that the PAC self-reported the errors to the commission.

The commission will weigh whether to impose the fine when it meets next week.

Alfond, a Democrat, said in a statement that he regrets the errors and is taking steps to ensure they don’t happen again.