The two men are the major contenders in the March 28 presidential election.
Jonathan of the Peoples Democratic Party (PDP) says he felicitates with all the Christians in the country.
A statement signed by his Senior Special Assistant on Media on Publicity, Reuben Abati, read: “As they undergo the rites of the 40-day Lenten season which runs from today, Ash Wednesday, to Easter Sunday, with constant prayers, penitence, fasting and self-denial, President Jonathan urges Christians in Nigeria to pray fervently for peaceful, violence-free and successful general elections in the country on March 28 and April 11, 2015.
“The President also seizes the opportunity of the commencement of Lent to call on all political leaders in the country, Christians and non-Christians alike, to rededicate themselves to the commitment they have made to peaceful, non-violent campaigns and elections, and do their utmost best to ensure that their supporters across the country uphold that commitment.
“In the spirit of that commitment, President Jonathan further urges all those seeking political office in the coming elections to eschew hate speech, incitement to violence, divisiveness and the malicious denigration of opponents.
“He urges all political parties in the country to join the federal government in giving the fullest possible support and cooperation to INEC to ensure that it delivers free, fair and credible elections.
“As they observe Lent, President Jonathan urges the Christian community to reflect more on all the ideals of human existence taught by Jesus Christ during his ministry on earth.
“He calls on Christians to make those ideals, including piety, love for others, tolerance, humility, selfless service to others, honesty, fairness, justice and equity more manifest in their daily lives.
President Jonathan prays that God Almighty will answer the prayers of all Nigerians and bless the country with successful elections, continued unity and further progress.”
Buhari of the All Progressives Congress (APC) called on Nigerians to use this season of penance to reflect, meditate and pray to God for peace and the rebuilding of our nation.
He made this appeal in a Lenten message to Nigerian Christians, as they joined other Christians worldwide in observing the annual period of repentance, sacrifice, fasting, prayers and almsgiving for the forgiveness of sins and spiritual revival.
Hear him: “My dear brothers and sisters, as we pray daily for mercy from God, let these 40 days be for us, a greater opportunity to change our ways and our hearts so that God can heal our land; which is in dire need of leaders and citizens who will show love and care for the poor and the rejected in our midst, for whom, Jesus Christ also sacrificed and died for.
“Let us abhor discriminations in our country on the grounds of ethnicity, religion, gender and political orientation and work for a united, peaceful and progressive Nigeria where few men and women will no longer have the pleasure and privilege to deprive the majority of our common wealth.
“As you observe this very important spiritual exercise, I will also join you in prayers to God for the strength you need to go through this season and for the forgiveness of the sins we all have committed against God and humanity.”