The head of the Democrats' campaign arm is insisting this week that President Obama is campaigning for threatened Senate Democrats in purple districts. 
 
But Rep. Debbie Wasserman Schultz (D-Fla.), who heads the Democratic National Committee (DNC), couldn't come up with even one example to back her claim. 
 
In an interview with Bloomberg's "All Due Respect" program, the Florida Democrat was asked why former President Clinton is on the stump for Senate Democrats in competitive contests but President Obama is not.
 
"The president is campaigning in competitive races," Wasserman Schultz responded. 
 
But pressed to name an example, she deflected the question. 
 
"There are races that the president is campaigning in around the country, and he's also governing," she said. "He's doing his job, and he's also spending time recording robo-calls and doing radio spots."
 
With Obama facing the lowest approval ratings of his six-year tenure, a long list of Democrats have distanced themselves from the unpopular president for fear of alienating voters. 
 
In the most recent example, Sen. Kay HaganKay HaganLinking repatriation to job creation Former Sen. Kay Hagan in ICU after being rushed to hospital GOP senator floats retiring over gridlock MORE (D), who's facing a tough reelection contest in North Carolina, said Thursday that Obama has failed to show strong leadership on certain issues — a clear rebuke.
 
Wasserman Schultz, for her part, is predicting the Democrats will defy the forecasts of election handicappers, who increasingly think Republicans will take over the Senate and make gains in the House. 
 
"At worst we're going to be in single digits, and I think we can even ... pick up a few seats in the House," she told Bloomberg. "And I think we hold the Senate."
 
Still, the DNC head also acknowledged — if indirectly — that a visit from Obama could hurt Democrats in certain districts. 
 
"We're deploying the president where he's being the most helpful," she said Thursday. "It's been a welcome addition and I know our candidates appreciate it."