Cameron's allies scorn talk of leadership threat

By Andrew Osborn LONDON (Reuters) - Two senior members of Prime Minister David Cameron's Conservative party spoke out to calm growing talk of a leadership challenge against him on Friday, days before a closely watched budget announcement. Halfway through a five-year term, Cameron's Conservatives are trailing the opposition Labour party by 10 percent in the polls, the economy is stagnant, some MPs say they are unhappy with his leadership, and one of his ministers is being touted as a possible replacement. ...