Constituency treasurer Arnold Bohana has a letter in the weekly paper, the Caernarfon and Denbigh Herald, that is short and sweet.
"At least after Martin Eaglestone's visit to the Plaid Cymru conference we know one big difference on May 3.
A Vote for Labour will keep out the Tories. A vote for Plaid Cymru could let in the Tories.
The people of Arfon have been warned".