The representative of Adamawa North Senatorial District, Ishaku Abba, had resigned from the Tinubu Support Group.
The Senator made this known on Monday in a series of tweets on his Twitter handle, followed by a television interview.
This followed the decision to nominate a Muslim, Senator Kashim Shettima, as the running mate of the presidential candidate of the All Progressives Congress for the 2023 polls, Asiwaju Bola Ahmed Tinubu, also a Muslim.
Abba, who noted that he is a member of the Christian Association of Nigeria, said: “It is very irresponsible of Tinubu to take his political survival over the stability and peace of Nigeria.
“For Tinubu now to be given the ticket and turn around to do what he couldn’t achieve in 2015 despite opposition from Catholics and other Christian leaders is extremely irresponsible.
“Buhari fought a civil war and understands the consequences of a divided nation.
“When Tinubu wanted to be VP in 2015, Buhari said no because he understood the importance of unity.
“We sat down in Abuja and strategised and we concluded that he should not take a Muslim as running mate.
“He (Tinubu) threw away the report.
“My conscience will not allow me to campaign for Tinubu.
“I am a member of CAN; I cannot deny CAN.
“I remain in APC.
“But I will take the survival of my country first over political considerations.
“We cannot work for such a man.
“I will oppose Christian-Christian ticket because I am interested in the stability of this country.
“A Christian-Christian ticket will be insensitive to Muslims of this country.
“The country is evenly divided among Muslims and Christians.
“So any government that is Muslim-Muslim will be illegitimate and will never gain the respect of Christians.”