The Democratic Senatorial Campaign Committee has sent out fundraising emails from individual senators for the past several days, capping off Thursday's deadline with a plea from Democratic strategist James Carville.

Carville's pitch centered on American Crossroads's recent ad buy and specifically mentioned one of the conservative outside spending group's founders -- former Bush strategist Karl Rove.

"Your decision right now … determines whether we have the money to invest in key races. If we meet our goals, we can hold the Senate and stop their sick Republican agenda. But if Rove wins, you got Big Oil writing energy policy, Big Insurance handling your health care, and you can kiss Medicare goodbye. Your choice, folks. You know what you need to do," Carville wrote.

Thursday at midnight marks the end of second-quarter fundraising. Both parties, their campaign committees and various candidates are in last-minute pushes to stock up their war chests before the deadline.
Sen. Al Franken (D-Minn.) sent out an email on behalf of the DSCC on Wednesday, the final senator in a long line of a Democrats who had send out fundraising pitches. Senate Majority Leader Harry Reid (D-Nev.) and Sens. Dick Durbin (D-Ill.), Barbara Boxer (D-Calif.), and John Kerry (D-Mass.) were among those making the plea for funds.

Democrats are trying to retain control of the upper chamber next year given that Republicans only need a net gain of four seats (if President Obama keeps the White House) to claim the majority. Democrats are defending 23 seats to the GOP’s 10.

In the first quarter, the DSCC beat the National Republican Senatorial Committee by a small margin, $11.6 million to $11.2 million.