The Rev Cyril Gamini Fernando made the comment in a statement yesterday, noting that election billboards with Francis' image have appeared. He did not name the candidate, but some billboards that show the pope posing with President Mahinda Rajapaksa have been put up in several parts of the country.
Rajapaksa is seeking a third term in the January 8 election, which comes five days before Francis arrives in Sri Lanka for a three-day visit. The billboards are exhibited in areas where Catholics live in large numbers.
More than 70 per cent of Sri Lanka's 20 million people are Buddhists.
The billboards are likely being used to portray Rajapaksa, a Buddhist, as a conciliatory leader amid allegations that his administration promotes Buddhist extremism against Christians and Muslims.
During his visit, Francis is scheduled to declare a 17th century priest Sri Lanka's first saint.