Sen. John Ensign, R-Nev., is in a strong position for re-election, according to the head of the Republican Senate campaign committee, who dismissed an expected challenge by Democrat Jack Carter by saying he hasn't proved he's a "legitimate candidate." Sen. Elizabeth Dole, R-N.C., head of the National Republican Senatorial Committee, passed up a chance to comment on the possibility that Las Vegas Mayor Oscar Goodman might challenge Ensign, saying she'd wait until he makes a move. Ensign "is a strong member of the United States Senate. He's very effective, I think standing strong," Dole said at a media briefing on...