I advise anyone to visit the page in question:
http://my.barackobama.com/page/community/post/Christopherwalls/gGCVyR/commentaryNote that the OP grabbed a screenshot from the bottom of the individual user's blog post. The photos above are actual shots of actual voters in Obama strongholds in Pennsylvania on primary day. The ones the OP finds "tricky" are
representations of Clinton strongholds. The page in question actually looks like this:
The voting problems were/are real and there were over 1000 complaints, some of them cited in this press release from
Lawyers' Committee for Civil Rights Under Law:
Election Protection Coalition Fields Over 1,000 Calls Reporting Scattered Problems Throughout Pennsylvania
PHILADELPHIA, April 22 /PRNewswire-USNewswire/ -- (10:30 p.m. Update) -- As polls closed across Pennsylvania this evening, the Election Protection Coalition reported receiving over 1,000 calls to the Voter Protection Hotline throughout the day. The Coalition entered more reports into its election reporting database than in any previous state primary, including primaries earlier this year in California, New York and other populous states.
Nationally renowned Lawyers' Committee for Civil Rights Under Law together with an extensive coalition of partners throughout Pennsylvania, including Philadelphia-based Committee of Seventy, responded to voting problems throughout the state through a comprehensive voter protection program. Nearly 1,000 nonpartisan citizen and legal volunteers monitored polling places throughout Pennsylvania. Approximately 800 volunteers worked in Philadelphia. Voters reported issues by way of the coalition hotline (1-866-OUR-VOTE) and through hundreds of field volunteers throughout the state.
~snip~
-- In Delaware County, one voter reported that the voting machines at her
precinct were set for Republicans only. She told the poll worker that
she was a Democrat and the worker replied, "Not today." The voter was
not able to cast a vote, but The League of Women Voters provided her
with the phone number of the Delaware County Board of Elections to
report and resolve the issue.
-- A voter reported that, at one location, building materials were being
thrown off the roof of the polling place to prevent voters from
entering.
link:
http://sev.prnewswire.com/legal/20080423/CLTU16122042008-1.html