TEGUCIGALPA, Honduras (AP) Honduras' ruling party conceded defeat Tuesday in presidential elections held two days earlier, giving victory to leftist opposition candidate Xiomara Castro and easing fears of another contested vote and violent protests. Tegucigalpa Mayor Nasry Asfura, presidential candidate of the National Party, said in a statement that he had personally congratulated Castro, despite only about half the voting tallies being counted from Sunday's election. The former first lady had 53 percent of