The is the upper house of the Northern Mariana Islands Commonwealth Legislature. The Senate consists of nine senators representing three senatorial districts (Saipan & the Northern Islands, Tinian & Aguijan, and Rota), each a multi-member constituency with three senators.
In the November 2007 elections, the three senators up for re-election were all re-elected to another four-year term in the 16th and 17th Senate. The Covenant Party, which lost control of the House, entered into coalition with the Democrats and a lone Independent over the Senate's leadership and voting agenda.
The CNMI Senate is currently controlled by a Republican majority under Senate President Franciso Borja.
(Shading indicates majority/plurality)
|End of 17th Legislature||4||1||4||9||0|
|Beginning of 18th Legislature||5||0||4||9||0|
|End of 18th Legislature||6||3|
|Beginning of 19th Legislature||7||0||2||9||0|
|December 29, 2015||6||8||1|
|January 9, 2016||3||9||0|
|End of 19th Legislature|
|Beginning of 20th Legislature||7||0||2||9||0|
|Latest voting share||78%||22%|
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