This article details the five most and least expensive contested primary elections in the State Senate. In the 2022 election cycle, nine of 37 Republican primaries and five of 29 Democratic primaries are contested.

While campaign finance is not the only factor in electoral outcomes, successful fundraising can provide a candidate with advantages during a campaign. Fundraising can also indicate party momentum.

While campaign finance is not the only factor in electoral outcomes, successful fundraising can provide a candidate with advantages during a campaign. Fundraising can also indicate party momentum.