In a sign of how embattled the 239-year old monarchy has become, there are only two parties willing to openly support the king in tomorrow's poll - and one is led by a Japanese-Nepali tourism entrepreneur.
Takashi Miyahara became a Nepali citizen through marriage and formed the Nepal National Development Party a year ago. He wants to see the Himalayan nation retain a 'symbolic' monarchy.
'Young people say, 'Republic, republic', but I think it is confusing,' said Mr Miyahara. 'For Nepal, it's better to keep a ceremonial king and a parliamentary system.'
The only other overtly pro-palace party is the Rastriya Prajatantra Party (Nepal), led by the home minister of King Gyanendra's brief rule. Several other smaller traditionally royalist parties have kept silent on the monarchy issue during campaigning.
While Nepal's kings have traditionally been considered incarnations of the Hindu god Vishnu, 60-year-old former businessman Gyanendra Bir Bikram Shah Dev is a controversial figure.
He wore the crown briefly as a boy, when his grandfather fled to India in 1950, and became king again in 2001, after a massacre at the palace killed 11 members of the royal family.