City and State previews New York's Congressional elections, with voting beginning Aug. 13 through Aug. 23. Locally, Democrats have four primary elections, while only one Republican is running for those seats. In the new 21st Congressional District, which now includes Rensselaer County, Democrats Matthew Putorti and Matt Castelli face off to take on incumbent Republican Elise Stefanik. In the 20th District, longtime incumbent Paul Tonko is against fellow Democrat Rostislav Rar, with the winner facing Republican Liz Joy in November. In the new 19th Congressional District which now stretches past Binghamton, Democrats Josh Riley and Jamie Cheney are competing to take on Republican Marc Molinaro. And in the 18th Congressional District, Democrats Pat Ryan, Moses Mugulusi, and Aisha Mills compete to take on Republican Colin Schmitt in November. There is also a special election Aug. 13 to Aug. 23 to fill the rest of this term after Antonio Delgado resigned to become New York’s lieutenant governor. Democrat Pat Ryan, the current Ulster County Executive, squares off with Marc Molinaro, the current Dutchess County Executive, to fill the final week's of Delgado's term in Congress. Read more about this story in City and State.