The editor of the Scottish Sun said much of Mr Brown's speech "had no bearing on Scotland".
Mr Dinsmore said: "We gave Labour one last chance at the 2005 election and they failed to take that."
However, he added that he was not convinced the Conservatives, who have just one MP north of the border, were the right party for Scotland.
Mr Dinsmore said: "The big question is, 'what is David Cameron going to do for Scotland?'.
"I think we need to hear about what he is going to do for the economy up here, what he is going to do about the constitutional question."
He said the paper was "very much" for the Union and he could not see it backing the Scottish National Party.
The Scottish Sun editor said he wanted to "kick start" a debate in Scotland.
"In all likelihood Scotland will vote for more Labour MPs than any other party but we can't just hide under the duvet and say 'ok, we are going to have five or 10 years of Tory rule and it is nothing to do with us," he said.
"So I think that is a debate we have got to get started."
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