ST. PAUL, Minn. (AP) - A senior adviser to presidential candidate Hillary Rodham Clinton says the Democratic frontrunner will be back in Minnesota before year's end.

Clinton communications adviser Karen Finney said Monday that the former secretary of state is beginning to build her campaign infrastructure in states beyond the pivotal first four. That includes bringing more paid staff aboard in Minnesota, which holds precinct caucuses March 1.

Finney wouldn't be more specific about the timing of Clinton's next visit. She was last in the state in August for a Democratic National Committee meeting.

Finney says Clinton and her volunteers are working to make sure her policy message gets through so voters can learn more about "the most unknown known person" in the 2016 White House race