The Democrats' Senate campaign arm raised more money in October than during the same month in any previous off-year election, boosted by the public anger over a government shutdown and buoyed by President Obama's seemingly undiminished fundraising prowess.

The Democratic Senatorial Campaign Committee will announce Monday that it brought in $4.8 million in October, besting the National Republican Senatorial Committee's $3.8 million.

With the October haul, the DSCC has so far raised $43.5 million so far in the 2014 mid-term election cycle. The NRSC has so far raised $29.5 million.

Democrats believe their fundraising advantage reflects, at least in part, the public's reaction to a 16-day government shutdown in October. Most Americans blame the fiscal crisis on Republicans and their ultimately futile effort to defund or delay Obamacare.

“The Republican brand has been permanently damaged and poll numbers show support for their reckless agenda is at an all-time low," said DSCC Executive Director Guy Cecil. "We are grateful for our supporters who continue to allow us to do the important work of protecting a Democratic majority in the Senate.”

Also helping Democrats was the president's aggressive fundraising schedule on behalf of the party. Obama headlined one event for the DSCC during October.

But, Republicans argued, lingering debt held by the DSCC puts a damper on the committee's strong fundraising numbers. The NRSC is debt-free, while the DSCC ended October $6.2 million in the red.

The stakes are high for both parties in the 2014 elections, particularly in the fight over control of the Senate.