Sir Keir appeared with Welsh First Minister Vaughan Gething, who said the two had spoken about Tata Steel a few days ago.
The UK Labour leader said this was an illustration of the “double benefit” that a Labour government across the UK could bring to Wales.
“Our first act was to get in touch with each other within minutes, to talk one-to-one, and then to set up a meeting to decide how we can resolve the issue and make sure we did everything possible we can do to save jobs in steel, to save steel here in Wales,” he said.
Sir Keir repeated his the message he had delivered throughout the election campaign.
“We have now had 14 years of chaos, of division and failure,” he said. “The choice tomorrow is to bring that to an end, to turn the page and start to rebuild with Labour.”
Plaid is hoping to do well across the west of Wales. The party’s Liz Saville Roberts said Labour “are worried about Plaid Cymru”.
