The U.S. military death toll in Iraq for October climbed to 100 on Monday, a week before U.S. elections in which President George W. Bush's Republicans could lose control of Congress over his policies in Iraq. Blasts killed at least 35 people and wounded scores in Baghdad in one of bloodiest days in the capital in weeks. The U.S. military said a Marine was killed in combat in western Anbar province on Sunday, bringing the monthly death toll to 100 -- the fourth deadliest for U.S. troops since the March 2003 U.S.-led invasion. October was already the deadliest month since January 2005 when 107 U.S. troops were killed. The highest monthly toll was in November 2004 when 137 deaths were recorded, Reuters reported.