USA-ELECTION/PENNSYLVANIA

At dusk the blast furnaces are lit up at the now-closed Bethlehem Steel mill in Bethlehem, Pennsylvania, U.S. April 21, 2016. After Bethlehem Steel's blast furnaces went silent 20 years ago in the city of Bethlehem, Pennsylvania, the local economy bounced back as new industrial parks filled with e-commerce companies and white-collar businesses fleeing New York's higher costs. That adds to the challenge for Donald Trump, Republican nominee for the U.S. presidency, as he seeks voters' backing in the state's primary on April 26. REUTERS/Brian Snyder TPX IMAGES OF THE DAY SEARCH BETHLEHEM STEEL FOR THIS STORY. SEARCH THE WIDER IMAGE FOR ALL STORIES TPX IMAGES OF THE DAY