(Landrieu, Pryor, and Hagan)

As you've noticed in the last three days, U.S. Senate Democrats have been scrambling to get on board with marriage equality before the Supreme Court hears arguments with Claire McCaskill (MO), Mark Warner (VA), and Mark Begich (AK) all signaling their support in the last two days.

So who's left?

TIME reports, and breaks it down:

The 11 remaining Senate Democrats who have not endorsed gay marriage publicly are: Mark Pryor (Ark.), Bob Casey (Pa.), Bill Nelson (Fl.), Jon Tester (Mt.), Tom Carper (Del.), Tim Johnson (S.D.), Joe Manchin (W.Va.), Kay Hagan (N.C.), Mary Landrieu (La.), Heidi Heitkamp (N.D.) and Joe Donnelly (Ind.). They can be broken down into three groups.

The first group was blunt in their opposition. The offices of Senators Manchin, Johnson and Pryor each responded to TIME in one or two sentences point-blank that they still don't endorse gay marriage. Each of these Senators represents a conservative state, and West Virginia, South Dakota and Arkansas all went heavily for Republican presidential nominee Mitt Romney in 2012.

TIME hit a wall speaking to the second group — Senators Landrieu, Tester and Donnelly — none of whom responded for comment. Louisiana, Montana and Indiana also went red in the past presidential election. Of the second group, Senator Donnelly might be able to look to his Midwestern neighbor for cover. Donnelly has endorsed benefits for gay partners in the past and said, “I stand with Rob on much of this” after Portman endorsed gay marriage after his son told him he was gay.

The rest — Senators Casey, Nelson, Carper, Heitkamp and Hagan — still do not endorse gay marriage, but are making clear signals that they are more moderate than some. Nelson spokesman Ryan Brown said he “strongly supports civil rights for same-sex couples, while believing marriage should be between a man and a woman.” He added that the decision might be out of the Senator's hands, as “the issue will likely be decided by the U.S. Supreme Court before the end of the year.”