Both presidential and congressional campaigns are pushing for online donations today ahead of the midnight first-quarter fundraising deadline.

Barack ObamaBarack ObamaWhite House declines to apologize to Boy Scouts Boy Scouts chief apologizes for Trump’s Jamboree address Dem lawmaker: Boy Scouts leader should condemn Trump's 'inappropriate remarks' MORE's campaign is offering a dinner with Obama for four lucky donors who contribute this quarter. Hillary ClintonHillary Rodham ClintonFusion GPS: White House trying to smear us on Russia OPINION | Gen. Hayden: How the Russians played the Trumps Book on Bannon getting made into TV series MORE sent out an e-mail urging supporters to give as few as $5 to help her reach a goal of $3 million for the final drive before the deadline.

Though Clinton has raised more than $2.5 million just from her latest online push, she's unlikely to raise more than Obama for the quarter. Obama in February and January had raised about $55 million , nearly $20 million more than Clinton had, according to campaign finance reports.

John McCainJohn McCainMr. President: Now is the time to apologize to John McCain Canada responds to transgender ban: All are welcome to join Canadian forces Dems don’t want to help GOP improve repeal bill MORE has had the least fundraising success of the three remaining candidates, raising less than $11 million during the year's first two months. The Arizona Republican has yet to tap into big-money GOP donors that George W. Bush relied on during his two campaigns for the White House, the New York Times reported today.

In races for Senate, Democrats are seeking to buffet their campaign advantage with online contributions.

For instance, in Louisiana, where Sen. Mary LandrieuMary LandrieuCNN producer on new O'Keefe video: Voters are 'stupid,' Trump is 'crazy' CNN's Van Jones: O'Keefe Russia 'nothingburger' video 'a hoax' Trump posts O'Keefe videos on Instagram MORE (D) could face a stiff test from Republican State Treasurer John Kennedy, Landrieu is hoping to raise $50,000 in a final online push. She has already raised $6.5 million for her reelection campaign, almost $4 million more than Kennedy has.