Plaid Cymru romps home in contest for Caerphilly seat in the Senedd

Plaid Cymru romps home in contest for Caerphilly seat in the Senedd. Labour has suffered by-election disaster in a part of Wales it has dominated for a century, fuelling fears of a meltdown in full Welsh elections in May, where polls indicate the First Minister role will be lost for the first time since devolution.