Reid's future may hinge on whether Nevada's Dem. Berkley can survive ethics probe.

The House of Representatives Ethics Committee announced in July it was investigating Berkley, a seven-term congresswoman, over whether some of her actions as a legislator were meant to benefit her husband financially.

The news comes at a bad time for Berkley, who is locked in one of the country's closest Senate races against Dean Heller, even before news of the ethics probe. Polls since have shown her trailing the Republican ahead of the November 6 election.

In a case stemming from a September 2011 article in The New York Times, Berkley is accused of saving a Las Vegas kidney transplant center, which benefited her husband, a kidney specialist who owns a string of dialysis centers. (Full Story)