Senator John F. Kerry yesterday blasted Senator Joseph I. Lieberman over his decision to stay in the Connecticut senatorial race as an independent, saying Lieberman ``is making a Republican case" to voters and is echoing the words of Vice President Dick Cheney in his campaign. Kerry, a Massachusetts Democrat, said on ABC's ``This Week" that Lieberman is ``dead wrong" on the issue of the Iraq war, and said he is making a ``huge mistake" by aligning himself with Republicans who support it. He urged Democrats to coalesce behind Ned Lamont, who defeated Lieberman in the Aug. 8 Democratic primary, based...