"His whole view is 'don't vote, it only encourages them', or something," Cameron said during a campaign speech Tuesday. "It's funny, but politics, life and elections and jobs and the economy are not a joke…I haven't got time to hang out with Russell Brand. This is more important."
But Miliband insisted that the meeting had made the election campaign more "interesting."
"What is a joke is saying this election is about leadership and then refusing to debate," he said on the campaign trail in south Wales Tuesday. "I am surprised by David Cameron, I just think he is totally out of touch. Some people have said this campaign is boring so I have decided to make it more interesting."
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Showing that the Conservatives might not be above headline-grabbing antics themselves, David Cameron is expected to pledge to ban tax rises until 2020 on Wednesday.
Cameron hopes the tax promise will inject momentum into his campaign, by highlighting the party's commitment to low taxes, but on Tuesday, Labour's press team tweeted that the Conservatives were resorting to "desperate gimmicks."