In the comments of Rachel Maddow's "Dem's Have 10 days to avoid defeat! by buckeyemike, I decided to make a list of Maryland's remaining uncommitted superdelegates, just to see if I could discern a pattern to suggest what might be holding them back. My research and a poll are refined and reposted, after the fold...
Montogomery County Maryland (Clinton 43 Obama 55)
Chris Van Hollen (Kensington)
US House MD-8 Rep.
DCCC co-chair
Already said pledged votes from ones district should be a big factor
Donates to himself mainly and Arent Fox LLP PAC
Hon. Heather Mizeur (Takoma Park)
MD House of delegates district 20
Former Councilwoman in Takoma Park
DNC member
Former Kerry advisor
donates to DNC, MC-DCC, MD-DSCC
Susan Turnbull (Bethesda)
MD DNC vice chair
Interior designer
donates to Emily's List, Victory NOW PAC, DCCC, DSCC, Chris Van Hollen, Al Wynn and Ben Cardin as well as a host of mostly female congressional candidates from other states
Belkis Leong-Hong (Gaithersburg)
Chair DNC Asian American and Pacific Islander Caucus
CEO Knowledge Advantage Inc
fundraiser for Kerry
donated to Clinton in 2005 but since mostly to DNC
John Sweeney (Bethesda)
President AFL-CIO
Critical of the Columbia trade deal that forced Clinton to dump Penn
Donated to WJ Clinton in 1996 but not much else
Charles County (Clinton 31 Obama 66)
Steny Hoyer (Waldorf)
US House MD-5 Rep. (All the counties went for Obama)
Donated in distant past to Thom Sawyer(OH-17) and Tom Udall(S-NM)
Baltimore County (Clinton 40 Obama 56)
Ben Cardin (Baltimore)
Junior Senator from MD
Former US House-3 Rep.
103rd Speaker, Maryland House of Delegates
donated to Federal Managers PAC back in 2004
John Sarbanes (Towson)
US House-3 Rep.
donated to Kerry
NOTE: I corrected Baltimore County results after comment from Answer Guy. Indeed, the initial numbers were from Balitmore City. He also brought up that Hoyer has moved from Greenbel, in PG County to Waldorf in Charles County, which was also corrected.