An activist of Jubo Dal - a front organisation of main opposition Bangladesh Nationalist Party (BNP) - was killed when security personnel opened fire on protesters in retaliation for their attack in east-central Chandpur district, police said.
Blockade campaigners attacked a Border Guard Bangladesh (BGB) vehicle on its way to Hajiganj area in the district, they said.
The opposition members started pelting stones at the BGB vehicle. The troopers tried to chase them away leading to the clash.
The BNP-led 18-party opposition alliance is boycotting the polls and political violence during nationwide strikes and blockades enforced by the opposition have left over 120 people dead and crippled the economy since November. It was demanding election under non-party caretaker government to oversee the polls.
Besides the opposition, a key ally of Hasina's Awami League party has also boycotted the polls. Prime Minister Sheikh Hasina, however, insists the vote will go ahead as planned.