June’s legislative primaries were the most expensive in state history, the New Jersey Election Law Enforcement Commission announced Monday.

Assembly candidates and outside spending groups backing their bids poured nearly $30.7 million into the races, eclipsing the previous spending record reached in 2015, when candidates and outside groups spent $18.3 million on primaries after adjustments for inflation.

All 80 Assembly seats are on the ballot this year. State Senate seats are not up for grabs until 2027.

Commission officials credited contribution limits that rose dramatically under a 2023 law for the increase.

The Elections Transparency Act doubled the maximum donation to candidates to $5,200, from $2,600, and the commission raised those limits to $5,500 under a provision of the act t

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