Warren essentially tied with Biden in new Economist-YouGov poll

It’s not just the Daily Kos straw poll that shows Elizabeth Warren surging. At least one poll has her in a statistical dead heat with our ostensible frontrunner, Joe Biden. The Hill: Sen. Elizabeth Warren (D-Mass.) is trailing former Vice President Joe Biden by just 1 point in a new Economist–YouGov weekly tracking poll. Biden sits at 21 percent support in…