Sarah Palin (photo) rumbled through Washington on the back of a Harley on Sunday as she and her family began an East Coast tour that renewed speculation the former Alaska governor would join the still unsettled Republican presidential contest. Wearing a black leather jacket and surrounded by a throng of cheering fans, Palin and family members jumped on bikes and joined thousands of other motorcyclists on the Memorial Day weekend ride from the Pentagon to the Vietnam Veterans’ memorial. Palin didn’t mention politics as she visited with participants, but she smiled broadly when many in the crowd urged her to run. “How do you wear all this leather and stay cool?” she asked one woman as Palin took off a leather jacket and worked her way through a crush of fans, photographers and reporters. Palin remains one of the biggest questions for Republicans, who have not yet settled on a frontrunner to challenge President Barack Obama’s re-election. While many of Palin’s likely rivals have worked to build campaign organizations, Palin has taken no concrete steps to begin a presidential campaign. … Singer-songwriter Jewel is gearing up for motherhood, and she’s already learned to multi-task. At age 37, she is expecting her first child — a boy — in July. Jewel married world champion bull rider Ty Murray in August 2008 after dating for about 10 years. The couple initially said they wanted to start a family right away, but ended up waiting a while. “We were both real careful and kind of cautious about it. I think it sort of scared both of us,” Jewel told The Associated Press. She’s hosting and judging the new Bravo TV show, “Platinum Hit,” which premieres Monday, and will release a new children’s album in the fall.