A Speaker-presumptive is a member of a House of Representatives

House of Representatives

House of Representatives is the name of legislative bodies in many countries and sub-national states. In some countries, the House of Representatives is the lower house of a bicameral legislature, with the corresponding upper house often called a "senate". In other countries, the House of...

 or other lower House

Lower house

A lower house is one of two chambers of a bicameral legislature, the other chamber being the upper house.Despite its official position "below" the upper house, in many legislatures worldwide the lower house has come to wield more power...

 who has not yet been formally selected as Speaker of the House, but who it is assumed will be at the next available opportunity. Typically, this applies to a Minority Leader

Minority leader

In U.S. politics, the minority leader is the floor leader of the second largest caucus in a legislative body. Given the two-party nature of the U.S. system, the minority leader is almost inevitably either a Republican or a Democrat, with their counterpart being of the opposite party. The position...

 who is expected to become Speaker upon a change of majority in the House. It differs from the term Speaker-designate

Speaker-designate

A Speaker-designate is a member of the House of Representatives who has been selected by the caucus of the majority party to be nominated as Speaker of the House, but who has not yet taken office or been elected by the full House of Representatives, as it is still occupied by the previous Speaker...

in that a Speaker-designate has been formally elected to the Speakership, but has not formally taken office.