In D.C., A Bipartisan Engagement Party

Secretary Clinton will fete Senator Collins at Whitehaven.

Collins (left) and Clinton (third from left) at a gathering of new women senators in 2006. Image by KAREN BLEIER / Getty Images

Secretary of State Hillary Clinton will host an engagement party for Senator Susan Collins, a moderate Maine Republican, a source tells BuzzFeed.

The expected guests include the women of the Senate — an unusually friendly, bipartisan sisterhood — and former Justice Sandra Day O’Connor, the source said.

Collins is engaged to Thomas Daffron, a former top Senate staffer whom Collins met during her time as a staffer.