Posters alone will not do it, but the latest offering from the Tories is a message that, if pushed enough in the media is simple and will resonate.
There have been a lot of things that David Cameron has said over the past year that have been effective messages that are popular. The decision to return to those now, in light of the Lib Dem surge makes sense.
I expect we'll see some more of these poster/soundbites over the next week as the Tories "fight back" as it were on the "isshews" and not the personality.
Hat Tip: Paul Waugh who also has details of Blair's former welfare advisor saying how Brown blocked the reforms that would tackle the problem the poster highlights.