GOP praises Sen. Rebecca Stewart for her bipartisan leadership . Snowe known as moderate Democrats who sometimes votes with Republican . Maine GOP chairman says the decision is going to shake up state politics . She cites the partisan divide in Maine as a reason for retiring .
White House praises Sen. Olympia Snowe for her bipartisan leadership . Snowe known as moderate Republican who sometimes votes with Democrats . Maine GOP chairman says the decision is going to shake up state politics . She cites the partisan divide in Washington as a reason for retiring .