Thursday 6 August 2015: Debate - Fox - Cleveland, Ohio (announced 16 January 2015).
The following Republican presidential contenders- the top 10 in an aggregate of the leading national polls- debate among themselves for two hours: former Governor John Ellis [Jeb] BUSH of Florida, Neurosurgeon Benjamin S. [Ben] CARSON, Sr., Governor Christopher J. [Chris] CHRISTIE of New Jersey, Senator Rafael Edward [Ted] CRUZ of Texas, former Governor Michael D. [Mike] HUCKABEE of Arkansas, Governor John R. KASICH of Ohio, Senator Rand PAUL of Kentucky, Senator Marco RUBIO of Florida, Business magnate Donald J. TRUMP, Sr., Governor SCOTT K. WALKER of Wisconsin.

Commentary: A BATTLE FOR HEARTS AND MINDS
AND A PARTY's SOUL
The GOP presidential nomination
contest now truly gets underway
by Richard E. Berg-Andersson TheGreenPapers.com Staff.

Wednesday 16 September 2015 (presumably): Debate - CNN - Ronald Reagan Presidential Library, Simi Valley, California (announced 16 January 2015).

8 PM Eastern Time [0000 GMT]: The following Republican presidential contenders- the top 11 in an aggregate of the leading national polls- debate among themselves for three hours:

• former Governor John Ellis [Jeb] BUSH of Florida
• Neurosurgeon Benjamin S. [Ben] CARSON, Sr.
• Governor Christopher J. [Chris] CHRISTIE of New Jersey
• Senator Rafael Edward [Ted] CRUZ of Texas
• Businesswoman Carly FIORINA
• former Governor Michael D. [Mike] HUCKABEE of Arkansas
• Governor John R. KASICH of Ohio
• Senator Rand PAUL of Kentucky
• Senator Marco RUBIO of Florida
• Business magnate Donald J. TRUMP, Sr.
• Governor SCOTT K. WALKER of Wisconsin

This Prime Time debate will be broadcast 'live' via CNN

6 PM Eastern Time [2200 GMT]: A one hour, 45 minute debate (also televised 'live' on CNN) among the remaining major Republican contenders, as follows:

• Senator Lindsey O. GRAHAM of South Carolina
• Governor Piyush [Bobby] JINDAL of Louisiana
• former Governor George E. PATAKI of New York
• former Governor James Richard [Rick] PERRY of Texas
• former Senator Richard J. [Rick] SANTORUM of Pennsylvania

NOTE: former Governor James S. GILMORE of Virginia did not qualify for participation in even the earlier debate this evening. Meanwhile, former Governor PERRY- although invited to participate (as noted above)- suspended his presidential campaign after having been so invited.

Commentary:
WELCOME BACK, MY FRIENDS,
TO THE SHOW THAT NEVER ENDS
The next GOP presidential debate now beckons
by Richard E. Berg-Andersson TheGreenPapers.com Staff

Wednesday 28 October 2015 (presumably): Debate - CNBC - University of Colorado Boulder - Colorado
announced 16 January 2015.

8 PM Eastern Time [0000 GMT]: The following Republican presidential contenders- the top 10 in an aggregate of the leading national polls- debate among themselves for 2 1/2 hours:

• former Governor John Ellis [Jeb] BUSH of Florida
• Neurosurgeon Benjamin S. [Ben] CARSON, Sr.
• Governor Christopher J. [Chris] CHRISTIE of New Jersey
• Senator Rafael Edward [Ted] CRUZ of Texas
• Businesswoman Carly FIORINA
• former Governor Michael D. [Mike] HUCKABEE of Arkansas
• Governor John R. KASICH of Ohio
• Senator Rand PAUL of Kentucky
• Senator Marco RUBIO of Florida
• Business magnate Donald J. TRUMP, Sr.

This Prime Time debate will be broadcast 'live' via CNBC

6 PM Eastern Time [2200 GMT]: A one hour debate (also televised 'live' on CNBC) among the remaining major Republican contenders, as follows:

• Senator Lindsey O. GRAHAM of South Carolina
• Governor Piyush [Bobby] JINDAL of Louisiana
• former Governor George E. PATAKI of New York
• former Senator Richard J. [Rick] SANTORUM of Pennsylvania

Tuesday 10 November 2015 (presumably): Debate - Fox Business News - Milwaukee, Wisconsin
announced 16 January 2015.

9 PM Eastern Time [0200 GMT, 11 Nov]: The following Republican presidential contenders- the top 8 in an aggregate of the leading national polls- debate among themselves for nearly two hours:

• former Governor John Ellis [Jeb] BUSH of Florida
• Neurosurgeon Dr. Benjamin S. [Ben] CARSON, Sr.
• Senator Rafael Edward [Ted] CRUZ of Texas
• Businesswoman Carly FIORINA
• Governor John R. KASICH of Ohio
• Senator Rand PAUL of Kentucky
• Senator Marco RUBIO of Florida
• Business magnate Donald J. TRUMP, Sr.

This Prime Time debate will be broadcast 'live' via FOXBusiness

7 PM Eastern Time [0000 GMT, 11 Nov]: A nearly one hour debate (also televised 'live' on FOXBusiness) among some of the remaining major Republican contenders, as follows:

• Governor Christopher J. [Chris] CHRISTIE of New Jersey
• former Governor Michael D. [Mike] HUCKABEE of Arkansas
• Governor Piyush [Bobby] JINDAL of Louisiana
• former Senator Richard J. [Rick] SANTORUM of Pennsylvania

The following major Republican presidential contenders did not qualify for even the so-called 'undercard' debate this evening: former Governor James S. GILMORE of Virginia, Senator Lindsey O. GRAHAM of South Carolina and former Governor George E. PATAKI of New York.

Tuesday 15 December 2015 (presumably): Debate - CNN - Las Vegas, Nevada
announced 16 January 2015.

8:30 PM Eastern Time [0130 GMT, 16 Dec]: The following Republican presidential contenders- the top 9 in an aggregate of the leading national polls- debate among themselves:

• former Governor John Ellis [Jeb] BUSH of Florida
• Dr. Benjamin S. [Ben] CARSON, Sr.
• Governor Christopher J. [Chris] CHRISTIE of New Jersey
• Senator Rafael Edward [Ted] CRUZ of Texas
• Carly FIORINA of California
• Governor John R. KASICH of Ohio
• Senator Rand PAUL of Kentucky
• Senator Marco RUBIO of Florida
• Donald J. TRUMP, Sr. of New York

This Prime Time debate will be broadcast 'live' via CNN

6 PM Eastern Time [2300 GMT]: A so-called "undercard" debate (also televised 'live' on CNN) will be held among the following remaining major Republican contenders:

• Senator Lindsey O. GRAHAM of South Carolina
• former Governor Michael D. [Mike] HUCKABEE of Arkansas
• former Governor George E. PATAKI of New York
• former Senator Richard J. [Rick] SANTORUM of Pennsylvania

Thursday 14 January 2016: Debate - Fox Business Channel, Charleston, South Carolina (announced 8 December 2015).

9 PM Eastern Time [0200 GMT, 15 Jan]: The following Republican presidential contenders- the top 7 in an aggregate of the leading national polls- debate among themselves:

• former Governor John Ellis [Jeb] BUSH of Florida
• Dr. Benjamin S. [Ben] CARSON, Sr.
• Governor Christopher J. [Chris] CHRISTIE of New Jersey
• Senator Rafael Edward [Ted] CRUZ of Texas
• Governor John R. KASICH of Ohio
• Senator Marco RUBIO of Florida
• Donald J. TRUMP, Sr.

This Prime Time debate will be broadcast 'live' via FBN (FOX Business Network)

6 PM Eastern Time [2300 GMT]: A so-called "undercard" debate (also televised 'live' on FBN) will be held among the following remaining major Republican contenders:

• Carly FIORINA
• former Governor Michael D. [Mike] HUCKABEE of Arkansas
• former Senator Richard J. [Rick] SANTORUM of Pennsylvania

Senator Rand PAUL of Kentucky was also invited to this "undercard" debate, but he has declined to participate.

Thursday 28 January 2016 (presumably): Debate - Fox - Iowa
announced 16 January 2015.

At 9 PM Eastern Time [0200 GMT, Fri 29 Jan]: The following Republican presidential contenders debate among themselves:

• former Governor John Ellis [Jeb] BUSH of Florida
• Dr. Benjamin S. [Ben] CARSON, Sr.
• Governor Christopher J. [Chris] CHRISTIE of New Jersey
• Senator Rafael Edward [Ted] CRUZ of Texas
• Governor John R. KASICH of Ohio
• Senator Rand PAUL of Kentucky
• Senator Marco RUBIO of Florida

Business magnate Donald J. TRUMP, Sr. has also been invited to participate in this debate but media reports indicate he will decline to attend (he and his campaign citing, in addition to what they consider to have been insulting- as well as unprofessional- statements made by FOX News itself, their contention that at least one of the moderators of this debate is biased against Mr. Trump and his presidential candidacy)

This Prime Time debate will be broadcast 'live' via FOX News

At 7 PM Eastern Time [0000 GMT, Fri 29 Jan]: A so-called "undercard" debate (also televised 'live' on FOX News) will be had among the following remaining major Republican contenders:

• Businesswoman Carly FIORINA
• former Governor James S. GILMORE of Virginia
• former Governor Michael D. [Mike] HUCKABEE of Arkansas
• former Senator Richard J. [Rick] SANTORUM of Pennsylvania

Circa February 2016 (date not set): Debate - ABC - New Hampshire
announced 16 January 2015.

Circa February 2016 (date not set): Debate - CBS - South Carolina
announced 16 January 2015.

Friday 26 February 2016 (presumably): Debate - NBC/Telemundo - Florida
announced 16 January 2015. suspended 30 October 2015 pending a possible change in network(s) televising this event

Circa March 2016 (date not set): Debate - Fox - TBD
announced 16 January 2015.

Circa March 2016 (date not set): Debate - CNN - TBD
announced 16 January 2015.

TBD - Conservative Media Debate - location TBD
announced 16 January 2015.

Monday 21 March 2016: Debate - Salt Lake City, Utah (announced 20 February 2016).

Monday 18 July - Thursday 21 July 2016 (presumably): 41st Republican National Convention, Cleveland, Ohio.

The 41st REPUBLICAN NATIONAL CONVENTION will have a total of 2,472 delegates, with 1,237 (a majority) necessary in order for a Presidential or Vice-Presidential candidate to be nominated.

The rules for the 2016 Republican National Convention call for the following formula for determining the number of delegates:

• For Jurisdictions with Constitutionally Elected Members of Congress:
  • 10 At-Large delegates from each state, that is, 5 at-large delegates for each U.S. Senator [Rule 13(a)(1)].
  • 3 District delegates for each U.S. Representative as established by the 2010 census [Rule 13(a)(3)].
• For Jurisdictions without Constitutionally Elected Members of Congress [Rule 13(a)(4)]:
  • 6 at-large delegates from American Samoa.
  • 16 at-large delegates from the District of Columbia.
  • 6 at-large delegates from Guam.
  • 6 at-large delegates from the Northern Mariana Islands.
  • 20 at-large delegates from Puerto Rico.
  • 6 at-large delegates from Virgin Islands.
• For all Jurisdictions - 3 party leaders: the national committeeman, the national committee woman, and the chairman of the state Republican Party. [Rule 13(a)(2)]
• Bonus Delegates
  • President: States casting a majority of their 2012 Electoral Votes for the Republican Candidate receive 4.5 + 0.60 × the Jurisdiction's Total 2012 Electoral Vote in bonus delegates. Should the District of Columbia cast the majority of their electoral votes for the Republican Candidate, the District will receive 4.5 + (0.30 × 16) in bonus delegates. Round any fractions UP to the next whole number. [Rules 13(a)(5) and 13(a)(7)]
  • U.S. Senate: Award 1 bonus delegate for each Republican Senator elected in the 6 year period between January 1, 2010 and December 31, 2015. Limit 2. [Rule 13(a)(6)]
  • Governor States electing a Republican Governor between January 1, 2012 and December 31, 2015 receive 1 bonus delegate. Limit: 1. [Rule 13(a)(5)(i)]
  • U.S. House: States electing Republicans to 50% or more of their U.S. House seats between January 1, 2012 and December 31, 2015 receive 1 bonus delegate. Limit 1. [Rule 13(a)(5)(ii)]
  • One Chamber: States electing a Republican majority to one chamber of the state legislature (OR the legislature is presided over by a Republican) between January 1, 2012 and December 31, 2015 receive 1 bonus delegate. Limit 1. [Rule 13(a)(5)(iii)]
  • All Chambers: States electing a Republican majority to all chambers of the state legislature (OR all chambers are presided over by a Republican) between January 1, 2012 and December 31, 2015 receive 1 bonus delegate. Limit 1. [Rule 13(a)(5)(iv)]

"The Rules of the Republican Party" as adopted by the Republican National Convention in Tampa, Florida on 27 August 2012 and amended by the Republican National Committee on 12 April 2013, 24 January 2014, 9 May 9, 2014, and 8 August 2014:
https://s3.amazonaws.com/prod-static-ngop-pbl/docs/Rules_of_the_Republican+Party_FINAL_S14090314.pdf.