The center-right modernizer could prove a challenging opponent for Prime Minister Alexis Tsipras
Aegean Airlines says passengers were "possibly racially profiling" the two Palestinians, causing them to leave the flight.
Half of the arrivals are fleeing war in Syria, according to the U.N.
Many had spent weeks stranded at the border with Macedonia.
In November, the Balkan states began blocking passage to all migrants but Syrians, Iraqis and Afghans, whom they consider refugees.
Merkel has been the chancellor of Germany for 10 years.
The IOM estimates around 3,500 refugees have died while crossing the Mediterranean so far this year
They were among about 1,500 migrants who have been stranded near Greece's northern border town of Idomeni.
Over 3,500 people have been stranded at the Iodemi border since Monday
He allegedly entered Greece posing as a Syrian refugee.
The Greek government simply cannot cope alone with the continued flood of refugees.
The Italian broadcaster said the production company negotiated the payment.
Despite the dangers of the European winter, refugees are still coming, and many will die.
The boat carrying the 18-month-old capsized in the Aegean Sea.
The UNICEF goodwill ambassador met with Syrians en route to Northern Europe.
The boy is recovering from hypothermia in a hospital in Turkey.
The International Organization for Migration said the figure rose from 4,500 a day during September.
A spate of Greek tragedy revivals that speak to the current crisis.
Analysts blamed election fatigue for record low number of voters.
Syriza is now likely to renew their coalition with Independent Greeks.
Tsipras's Syriza party was on course to claim 35.3 percent of the vote.