Prominent leaders from the Christian right have warned Republicans they must do more to advance conservative values ahead of the US mid-term elections. Their message to Congress, controlled by Republicans, is "must do better". Support from about a quarter of Americans who describe themselves as evangelicals was a factor in President George W Bush's two election victories. The Republicans will need to keep them onboard if they are to retain control of Congress in November. At a news conference in Washington, some of America's most influential conservative leaders said the current perception among evangelical Christians was that the Republican majority...