<br /> Politico reports that Joe Biden’s once double-digit lead has crumbled in a national poll taken after last week’s debate.<br />The CNN/SRSS poll was released on Monday.<br />It was conducted entirely after the first two Democratic presidential primary debates last week.<br />Kamala Harris is in second place, among Democrats and Democratic-leaning independents who are registered to vote, at 17 percent.<br />Biden still sits at the top of the pack with 22 percent, but his once-commanding lead has eroded significantly. <br />