Rainian House of Senators election, 2017

The 25th Rainian House of Senators election is due to be held on the 14th October 2017 to elect 39 of the 78 seats in the House of Senators, the of the Parliament of Rainier. It is the first national election to be held in Rainier following the change in government as a result of the 2017 House of Councillors election.

The House of Senators is elected by halves to six year terms via. The last House of Senators election in 2014 saw the National Union-Social Credit coalition retain its majority which it had gained in the 2008 and 2011 elections. In 2017, the class of Senators elected in 2011 is up for re-election.

Electoral process
The House of Senators is elected in. Senators are elected to six year terms, with half of the House of Senators being put up for election every 3 years. 39 of the 78 senators are elected via a system in several multi-member districts based on population distribution. For the 2017 election the Senators elected in 2011 are up for re-election.

The 2017 House of Senators election was the first since 2005 that the House of Senators was elected in the same year as the House of Councillors.

Background
Since the 2008 House of Senators election held during the height of the 2007-2008 financial crisis the National Union Party has retained a plurality in the House of Senators, commanding a majority between 2008-2014. Following the 2014 election the National Union and Social Credit parties signed a coalition agreement in the House of Senators enabling the Andrew Clarkson government to pass legalisation with the confidence of both the Councillors and Senators.

The 2017 House of Councillors election saw the government parties (National Union and Social Credit) lose a large amount of seats to the Labour and Reform parties with a of Labour and the Green-Left Movement winning a majority in the House of Councillors. This meant that the House of Councillors and Senators were in the position of being in a "twisted parliament" with one party controlling the lower house and another the upper house.

Following the election the leader of the NUP Clarkson resigned with an interim leader, Mary Towers, being placed in charge until a leadership election for the party is held. The Socred leader and cabinet minister Rhondri Mears also resigned with the party's sole MP Damian Foot being appointed leader. Foot subsequently renamed the Socreds the "Innovation Party" as part of a re-branding effort regarding the party.