TEGUCIGALPA (Reuters) - A left-right coalition led by a flamboyant TV host took a surprise lead in the Honduran presidential election, initial results showed on Monday, upsetting forecasts that the crime-fighting, U.S. allied incumbent would comfortably win.  Salvador Nasralla, who helms the Opposition Alliance Against the Dictatorship, had 45.17 percent of the vote, while the National Party s Hernandez had 40.21 percent with 57 percent of ballot boxes counted, according to the country s election tribunal. 