Senate Majority Leader Harry Reid (D-Nev.) said Tuesday afternoon that he would weigh in before the week is out in the ongoing Democratic presidential primary between his two Senate colleagues.

“Yes,” Reid stated flatly when asked if he would endorse either Sen. Barack Obama (D-Ill.) or Hillary Rodham Clinton (D-N.Y.).

With the last presidential primaries to be held in Montana and South Dakota Tuesday night, many have speculated that Obama may soon take the lead in pledged delegates. Senators have been mulling whether to endorse now or after the primaries are over.

Reid said he would encourage his colleagues to follow his lead and endorse as the week plays out, but at the same time, asked his colleagues to keep their powder dry in the immediate term. The Majority Leader said before Senators make their choice, the final primary votes should be cast, and Clinton should have her say.

“She needs to be left alone. Let’s let the Democratic primaries play out,” the Majority Leader stated.