Elfyn Llwyd (left) and Dafydd Iwan had brought a 'good open debate'
Dafydd Iwan has been re-elected as president of Plaid Cymru following a postal ballot of the membership.
After beating rival Elfyn Llwyd MP, the party leader in Westminster in the contest, he said members wanted both to play leading roles in the party.
Mr Iwan had cited recent successes, which included increasing membership and wants to update the party, including use of social network sites.
Mr Llwyd put an emphasis on community politics at the heart of his campaign.
All party members were balloted by post.
Mr Iwan said the post was primarily about representing members at leadership level.
"Last year we entered into government for the first time in Plaid's history, and while this is a very exciting time for us as a party, it also poses new challenges," he said.
"I committed to being the bridge between the members of Plaid and the leadership at all levels of government, and I will ensure we make the most of the technology we have available to ensure the voice of the membership is heard."
He also pledged to increase membership and make the best use of the party's youth section.
Mr Iwan also said members wanted to see both himself and Mr Llwyd play a leading role in the party.
"Elfyn has put forward a number of ideas during the campaign and I hope to work with him on taking some of these forward into the next General Election campaign, with Elfyn at its helm," he said.
Hustings for the race for the presidency began at the end of July and ended on 20 August.
In the past the role of Plaid leader and president had been combined but five years ago the roles were split.
That left Ieuan Wyn Jones as assembly leader - later Plaid party leader - and Mr Iwan as president - with Mr Llwyd leader of the parliamentary party.
Both party leader and president are eligible for re-election every other year.
Mr Iwan, who lost his seat on Gwynedd council in the local elections last May, has promised to bring the party into the 21st Century with an emphasis on making the most of social networking sites to build support.
Mr Llwyd, the Meirionnydd Nant Conwy MP, said he wanted to see a reinvigoration of the party's intellectual life.
Plaid chief executive Gwenllian Lansdown paid tribute to both candidates.
"The way they have both campaigned has been a credit to themselves and the party," she said.
"The campaign has led to good open debate about how the voluntary wing of the party currently works and has invigorated the party's membership."
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