In the meantime, RNC operatives are encouraged by the results they've seen in recent special elections in Montana and Georgia, where they say their models were not only spot-on, but enabled them to target undecided voters to push their candidates over the edge.

"These models that we build, they’re predictive, but they’re also prescriptive," said Conor Maguire, RNC director of external support.

Maguire, Parnitzke and Jefferson were in Wisconsin this week training state party operatives on the program. The data it contains can be scaled up to the presidential level but down as small as a city council race, they said. Models will be built for Gov. Scott Walker's likely re-election campaign and for the Republican who challenges Democratic Sen. Tammy Baldwin — but they can also be used for state judicial and legislative races.

"They’re useful to the party between now and election day in 2018, but there’s a lot of things going on between now and then," Jefferson said.

The party has already used data indicating 75 percent of Wisconsinites want Democrats to "find a way" to work with Trump in an ad campaign urging Baldwin to hold a vote on Supreme Court Justice Neil Gorsuch's nomination, Parnitzke said.