NPR's Brian Naylor reports that commentator Pat Buchanan says he will stay in the GOP presidential race despite calls from frontrunner Bob Dole that he end his campaign and help unite the Republican Party. Buchanan, campaigning in Tennessee, Louisiana and Texas in preparation for next week's Super Tuesday primary, said the contest isn't over yet and that Dole needs to address the concerns of Buchanan supporters over such issues as abortion and job security.
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