comments were taken out of context and did not reflect the ruling Popular Party’s position.
Prime Minister Mariano Rajoy refuses to allow a plebiscite, arguing it violates the Spanish constitution.
“It is up to Spaniards to decide what they want Spain to be,” he has repeatedly said.
On Catalan’s national day a year ago, hundreds of thousands of flag-waving separatists rallied in Barcelona. The year before, they formed a 400-kilometre human chain across the region.
Nearly 500,000 people have signed up to take part in Friday’s rally.
Hundreds of bikers gathered in the fog enshrouded central square of Vic, a town some 70 kilometres of Barcelona, on Friday morning to head to the Catalan capital together for the event.
“Achieving independence will not be easy but winning the election will be an important first step,” said one of the bikers, retired 65-year-old Eusebio Rius, who sported a white moustache.
One of the buildings in the square had a large electronic clock counting the time remaining until the elections.
The pro-independence list includes former FC Barcelona coach Pep Guardiola.
“We want to manage our resources ourselves,” he said on Tuesday, calling for “a more socially stable and prosperous country for all”.
Opponents of Catalan independence are more divided.
Rajoy refuses to negotiate on independence and has not publicly discussed possible constitutional reforms.
He insists the election will be held to pick a new Catalan government and has no significance beyond that. But new far-left anti-austerity party Podemos favours a referendum. The main opposition Socialists promise a constitutional reform which would make Spain a federal state and grant Catalonia more powers.
British Prime Minister David Cameron and German Chancellor Angela Merkel have backed Rajoy. Cameron has warned that Catalonia would leave the EU if it broke away from Spain.