The New Hampshire primaries are Feb. 9. Delegates at stake: 24 pledged for Democrats, 23 bound for Republicans.
What to watch for in South Dakota
Six states hold Democratic and Republican primaries on June 7, including South Dakota. On Tuesday, Hillary Clinton and Bernie Sanders will battle for 20 available delegates.
Super PACs have spent supporting and opposing current presidential candidates in South Dakota. The super PACs are technically independent. They are required to identify the money they spend in favor of or against specific candidates.
Note: Candidates with no associated independent spending not shown.
Source: Federal Election Commission
Top national fundraisers
Area of rectangles represents total campaign contributions for each candidate nationally. The shaded portion represents cash on hand.
Note: A previous version of this graphic displayed net rather than total contributions.