Judges sitting in the UK's Supreme Court have this morning unanimously ruled that the first Welsh bill is within the Welsh Government's range of powers. There had been a dispute about whether or not the Local Government byelaws bill was lawful or not.
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Crowds came to hear him speak this afternoon in Bangor - a seat where fewer than 100 votes could make the difference at the next election.
Scattered showers with the odd heavy burst possible but there will be plenty of sunny spells too.
A rather wet and windy evening, with rain in the north and showers elsewhere.