Cleaner hospitals

I'm still struggling with "cleaner hospitals" as being a major election issue that could win the Conservatives many votes. I'm not saying that clean hospitals are not important, they need to be to prevent infections. However, are the conservatives really saying that a vote for Labour or the Liberal Democrats will mean dirty hospitals? Will it sway any votes? You've got to be a pretty shallow voter to be persuaded to vote Tory on the basis that hospitals will be cleaner!!