During the pre-election campaign period, each political force is limited in the amount of money it can spend on political advertising, charity, sponsorship, benefits and donations. The spending limits do not apply to expenditures on the production of advertising or campaign planning. Electioneering expenditure includes both the total expenditure of the party and the individual expenditure of parliamentary candidates.

Each of the 16 lists of candidates for the elections may spend no more than EUR 635,317.44 on the limited campaign expenses, the KNAB said. The largest spending has so far been declared for the United List, the Union of Greens and Farmers and Latvia First:

United List - €393,729,
Greens and Farmers Union - €294,031,
Latvia First - €228,066,
For Stability! - €219,211,
New Unity - €147,870,
For Latvia's Development - €130,314,
Harmony - €120,097,
National Alliance - €119,019,
Sovereign Power - €70,850
Movement For! - €67,802,
Progressives - €44,443,
New Conservative Party - €26,662,
People. Land. Statehood - €17,672,
Center Party - €6,169,
Union of New Latvians - €314,
Power of People's Power -  0.

During the pre-election campaign period, advertising service providers and campaigners are obliged to inform KNAB about all concluded advertising contracts. Information on each contract must be submitted to the KNAB within three days of its conclusion.