Major races are taking place in the Pennsylvania primary elections on Tuesday.
Pennsylvania is one of six states holding elections on May 20.
The AP reports:
Four Democrats are seeking the nomination to challenge Pennsylvania Gov. Tom Corbett, seen as one of the nation's most vulnerable Republican governors.
In Pennsylvania, Chelsea Clinton's mother-in-law and former U.S. Rep. Marjorie Margolies seeks to return to the House representing a district northeast of Philadelphia in a four-way Democratic primary.
For more information on primaries around the nation, read this piece from HuffPost's Amanda Terkel and Samantha Lachman.