HELSINKI — Polls have closed in Finland's parliamentary election, with early results showing the conservatives in the lead and big gains for a nationalist party that wants to block bailouts for Portugal and other cash-strapped eurozone members.

With about one-third of votes counted, the conservative National Coalition Party — part of the current center-right government — was in the lead with 20 percent, just ahead of the opposition Social Democrats.

The nationalist True Finns, who don't see why Finland should rescue Europe's debt-ridden economies, were in third place with almost 19 percent.

Full official results were expected later Sunday.

The rise of the True Finns has rattled nerves in the 17-member eurozone where bailout funds require unanimous approval.