Washington, Dec 8 (AFP/APP): He’s supposedly too old, too moderate, too prone to campaign stumbles.But despite the criticism long circulating about Joe Biden, he has proven the most resilient candidate in the Democratic presidential nomination race — at least for now. The 77-year-old former US vice president is capping off a big week that has seen him take on a more aggressive tone on the campaign trail. He was feeling so invigorated and pugnacious during his eight-day “No Malarkey” bus tour through early-voting Iowa that he challenged an obstinate voter to a push-up contest Thursday. The elder statesman is the … Continue reading Feisty Biden fights for top spot in 2020 Democratic race