By contrast, the People's Party (SLS) had the least impactful election campaign, having stayed outside the parliament despite the significant amount of funds invested, show reports published on the website of the Agency for Public Legal Records (AJPES).
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The SDS, which won almost 25% of the vote, invested EUR 450,000 in the campaign, which means it spent EUR 2.10 per a vote.
The second-placed Marjan Šarec List (LMŠ), which was endorsed by 12.6% of the voters, was better in this respect, having invested EUR 100,000 for an euro-to-vote ratio below one.
The coalition Pensioners' Party (DeSUS) posted the lowest return on investment among the parliamentary parties, as it invested more than EUR 360,000 to receive just under 5% of the vote (EUR 8.30 per vote).
The SLS's election campaign was even less efficient; the party it invested EUR 320,000 to receive 3.95% of the vote to stay just below the parliament threshold (almost EUR 14 per vote).
The United Left - Democratic Labour Party (ZL-DSD) was the party which invested the most funds (EUR 60,000) among the parties not to win at least 1% of the vote, the threshold for monthly financing from the budget.
The far-right party Forward Slovenia invested virtually no funds in the campaign (only EUR 35 to open an account), while it received 0.24% of the vote.