IS THE SPEAKER OF THE HOUSE ALWAYS OF THE MAJORITY PARTY?

Recently Nancy Pelosi was named the Majority of the House of Representatives The Speaker of the House of Representatives need not be a member of the majority or plurality party or even a member of Congress.  The exceptions mainly have come when a third party has members of the House, but the leader of the majority or plurality party need not be the speaker.  Though possible, the Speaker has always been a member of Congress.

Historically, the Democrats have always elevated their minority leader to the speakership upon reclaiming majority control of the House. However, Republicans have not always followed this leadership succession pattern. In 1919, Republicans bypassed James Robert Mann, R-IL, who had been Minority Leader for eight years, and elected a backbencher representative, Frederick H. Gillett, R-MA, to be Speaker. Mann had "angered many Republicans by objecting to their private bills on the floor", and was also a protégé of autocratic Speaker Joseph Gurney Cannon (R-IL18) who had been Speaker from 1903 to 1911, and was still in the House. Many members "suspected that he [Mann] would try to re-centralize power in his hands if elected Speaker".[10]*]**
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Most Speakers whose party has lost control of the House have not returned to the party leadership (Tom Foley lost his seat, Dennis Hastert returned to the backbenches and resigned from the House in late 2007). However, Speakers Joseph William Martin, Jr. and Sam Rayburn did seek the post of Minority Leader in the late 1940s and early 1950s. Nancy Pelosi is the most recent example of an outgoing Speaker who was elected Minority Leader, after the Democrats lost control of the House in the 2010 elections.*

Thus it is unusual for a former Majority Leader, like Nancy Pelosi, to become the Majority Leader again after a period of being Minority Leader.

During the period of changeover of Majority or Plurality Parties from the November election to the January transition, the Speaker remains the same.

But the bottom line is that the election of Nancy Pelosi to Speaker is not a sure thing since a number of members of her party voted against her as Majority Leader.

* https://en.wikipedia.org/wiki/Speaker_of_the_United_States_House_of_Representatives
http://www.quora.cohttpsm/Has-there-ever-been-a-Speaker-of-the-US-House-of-Representatives-who-was-not-from-the-majority-party