The Vatican has condemned the abduction of one of Iraq's most senior Christian clergymen, Syrian Catholic Archbishop of Mosul Basile Georges Casmoussa.
Archbishop Casmoussa has led Iraq's Syrian Catholics for six years.
A Vatican spokesman described it as an "act of terrorism", and demanded the archbishop's immediate release.
The 66-year-old cleric was seized outside his church in the northern city of Mosul on Monday.
The kidnapping came as more than 20 people died in rebel attacks around the country, ahead of the 30 January poll.
The most deadly strikes - claiming a total of at least 16 lives - occurred in the northern cities of Baiji and Baquba.
Archbishop Casmoussa - who was appointed leader of Mosul's Syrian Catholic community six years ago - was seized by gunmen at about 1700 local time (1400 GMT) as he was about to enter his car, a local priest told the AFP news agency.
He said the kidnappers forced the clergyman into the boot of their vehicle before speeding away.
There have been a number of recent attacks on Iraq's Christian minority. Two churches were bombed in Mosul in December.
Christians make up some 3% of Iraq's population of about 25 million.
The Syrian Catholic church belongs to the Eastern rite of Catholicism.
SYRIAN CATHOLIC CHURCH
Observes the Liturgy of St James, performed in Syriac, though certain readings are in Arabic
Practised mostly in Iraq and Lebanon
In communion with Roman Catholic church since the 17th century
It is one of a number of semi-autonomous Catholic churches in the Middle East, which pledge allegiance to the Pope in Rome but enjoy a degree of independence in their religious rites.
The abduction comes despite reinforced security in Mosul, where US and Iraqi forces have been trying to tackle rebels who have vowed to disrupt the election.
Mosul is a hotbed of insurgent activity where numerous people accused of collaborating with the Americans have been abducted and killed, says the BBC's Jim Muir in Baghdad.
Although there have been a number of attacks on Christian targets, Iraqi security forces have been the focus of attacks by mainly Sunni Muslim insurgents trying to derail the election.
Monday's violence included suicide car bombings in Baiji and Ramadi, as well as an attack on a checkpoint near Baquba.
Gunmen also attacked police stations in Sharqat, north of Baghdad, and Dour, a Sunni village near Tikrit.
The abduction came on a day of violence across Iraq
In a separate incident, two US marines died in an attack on an American military convoy in Ramadi, west of Baghdad.
Several major Sunni parties are boycotting the election, after their calls for a delay - on the grounds of security - went unheeded.
Iraqi security forces will provide the bulk of the protection for the polls, although US troops levels will be at their highest-ever level during the elections - at about 150,000.