The Democratic donor who introduced President Obama at a Philadelphia fundraiser for Senate Democrats Thursday called Obama "our Dayenu president" — a Hebrew word that roughly translates to "it would have been enough."

The message was that despite the troubling times Obama now faces — including a glitch-plagued rollout of his signature health care law — some Democrats still believe he has met and exceeded their expectations.

The fundraiser at the home of David and Rhonda Cohen, where Obama raised more than $1 million for the Democratic Senatorial Campaign Committee, was a balm for the president on a day when he was forced to propose significant changes to Obamacare after millions of Americans lost existing insurance that Obama had repeatedly promised they would be allowed to keep.

Obama told the party's donors that Democrats' work in Washington is not yet complete. But to ensure that their agenda advances on Capitol Hill, the president said, maintaining control of the Senate in the 2014 mid-term elections would be essential.

"Particularly at a time when Washington is so polarized, if we do not have at minimum a Democratic Senate, it is very hard to see how we can make some of the advances that we need to make on work that is still undone," Obama said before participating in a question-and-answer session that was closed to reporters.

The fundraiser marked the Obama's fifth of the year on behalf of the DSCC. He also appeared at a handful of events benefiting Democrats' campaign arm in the House, and by the end of November will have participated in 21 fundraising events for the Democratic National Committee.

Obama has continued to attract donors and campaign cash despite approval ratings that in recent weeks plunged to the lowest point of his presidency — 39 percent in the latest Quinnipiac University poll.