The money, which party officials tell POLITICO is possible because of stronger-than-expected fundraising, is in addition to $90 million budgeted earlier this year.

The RNC says the additional cash means more bodies in the field, more phone banks and a stronger early-vote program.

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By its count, the RNC now plans to spend about $100 million total on the midterms, which it says is several million dollars more than in 2010. That also includes House and governor’s races.

“Taking back the United States Senate is our number-one priority, and we are doing our part to help,” said RNC Chairman Reince Priebus. “For months we’ve been in communities building relationships and helping state parties and campaigns with data and technology, and we’re excited for the opportunity to help turn out voters on the road to winning six seats and taking back the Senate.”

Earlier this year, the Democratic Senatorial Campaign Committee outlined plans to spend $60 million on a 4,000-person, data-driven field and voter-contact program to register and turn out voters for the midterms. A heavy emphasis of what they code-named The Bannock Street Project, named after an office in DSCC Chairman Michael Bennet’s 2010 Colorado Senate campaign, is on drop-off voters, who show up in a presidential election but stay home in a midterm.

The Democratic National Committee is less of a factor than it has been in previous cycles when it comes to GOTV, and a spokesman declined to offer a figure on how much the DNC will invest in the midterms.

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The RNC said the $8 million will fully fund its absentee-ballot and early-vote program. This program will make it easier for Republican voters to request ballots, return them and get to the polls early.

President Barack Obama’s campaign invested big in turning out early votes in 2012, a tactic Mitt Romney’s campaign pooh-poohed. Democrats touted their efforts in states like Iowa and Colorado.

“Increasing our early vote is going to be important to winning in November,” said Sen. Jerry Moran of Kansas, chairman of the National Republican Senatorial Committee. “These additional resources will greatly help our candidates cross the finish line and create a Republican Senate majority that will deliver results for Americans.”?

The RNC declined to specify if any particular states will benefit more than others because of the additional funds, but an operative described the list of states as “the usual suspects.”

A constellation of Republican committees recently unveiled register.gop to let users more easily register in their states and track down the information they need to vote successfully.

A DNC official said the committee spends millions every year to help update its voter-ID data infrastructure. Last year, it launched the Voter Expansion Program to increase accessibility and oppose disenfranchisement efforts. It has hired state-level directors in over a dozen states, including several with high-profile Senate races, such as North Carolina, Arkansas, Iowa, New Hampshire and Georgia.

Republicans expressed confidence that they will have the resources they need to be able to win a majority in November.

“The RNC has been a great partner in the effort to take back the Senate,” said NRSC finance chairman Sen. Rob Portman of Ohio.