Senate Majority Leader Harry Reid (D-Nev.) excused himself midway through his weekly press conference with reporters Thursday to take a call from colleague and unsuccessful presidential candidate Sen. Hillary Rodham Clinton (N.Y.). Details of the conversation were being kept under wraps, but sources say Clinton was returning a call to Reid. Reid has said he would finally weigh in on the contest by the end of the week, lending Sen. Barack Obama (D-Ill.) support from one of the last remaining superdelegate holdouts. Clinton has planned a Saturday press conference in which she is scheduled to officially concede and endorse Obama. — Erin P. Billings