The phrase "introductory speaker" is correct and can be used in written English.
It typically refers to a person who introduces the main speaker or topic at an event or presentation. Example: The introductory speaker for the conference welcomed the attendees and gave a brief overview of the day's agenda.
"Pastor Jeffress was suggested to us as a possible introductory speaker because he serves as pastor of one of the largest churches in Texas," Mr. Perkins said.
They have been treated so badly for so long that it is about time for politicians to put them first!" One introductory speaker, pastor Mark Burns, an African American preacher who has long been a Trump supporter, did mention Ryan's remarks.
Those remarks, however, paled in comparison to the criticisms launched by Clinton's introductory speaker, Machinists Union President Tom Buffenbarger.
The introductory speaker, Ken Timmerman, referred to the former UN Ambassador as both a "warrior of light," and "our next Secretary of State".
An hour before McCain took the stage, an introductory speaker revved up the crowd by referring to Barack "Hussein Obamaa twice.
But after the crowd recited the Pledge of Allegiance and an introductory speaker ticked off a list of Kasich's accomplishments, the same man who had denigrated the candidate privately rose from his seat and began to address those in the room.
A few introductory speakers talked about the importance of faith and abstinence, and Mike Sweeney, first baseman for the Kansas City Royals, gave Mr. Cheney a jersey.
One of the introductory speakers at the conference was Senator Robert F. Kennedy, and Banzhaf says that as a result of a talk he had with one of the Senator's assistants just before the health conference convened, Senator Kennedy incorporated into his speech a recommendation that the health organizations help provide legal assistance for the defense of the F.C.C.'s decision.
Even McCain's introductory speakers were pleading with the audience to move beyond their cynicism.
McCain hasn't seemed all too eager to tamp down the hate-filled rhetoric emanating from his crowds, beyond merely distancing himself from two introductory speakers that used Obama's middle name as an epithet.
In addition to introductory speakers raising the Senator's middle name in the form of an insult, audience members have screamed out, during recent events, "terrorist," "treason," and "kill him," when the Illinois Democrat's name has been discussed.
