The Welsh nationalist party, Plaid Cymru, has enjoyed an increase of 23% in membership over the last four months, it has emerged .

After a hugely disappointing showing at the assembly elections last year, Plaid set about relaunching itself and attracting new members. The surge has probably been helped by the search for a new leader to replace Ieuan Wyn Jones, who decided to step down after Plaid's poor election results, and possibly by the UK-wide debate over the future of Scotland.

Plaid's chief executive, Rhuanedd Richards, said: "In October, we launched the most innovative membership drive we've ever undertaken as a party. Since then, we have seen our membership figures surge as people join the party to play their part in moving Wales forward.

"Our membership has increased by 23%. We're delighted not only to be welcoming so many former members back, but also to be welcoming many new members."

Last week, Plaid Cymru unveiled a report on how to reinvigorate the party, now the third biggest in the Welsh assembly behind Labour and the Tories. The report said the party had to address the perception that it was for Welsh speakers only.

Richards said Plaid Cymru's attempt to renew itself was inspiring people to come "home to Plaid", adding: "The debate on Wales's future is very much at the forefront of people's minds, and many have decided that only by joining the party of Wales can we get the best for our nation and its people. The exciting leadership process has of course added an extra incentive to people to join.

"Our grassroots members are a vital part of Plaid. They're the people who are ultimately going to help move the party forward and communicate our positive vision for Wales in their communities across Wales."

The party's membership now stands at 7,863.