Democrats have remained mum as Republican candidate campaigns in South Dakota are starting to show signs of life for the 2020 election.

No Democratic candidates have announced for either the U.S. House or U.S. Senate seats up for election next year while on the Republican side, freshman state Rep. Scyller Borglum of Rapid City has announced her intention to run against U.S. Sen. Mike Rounds in a primary.

More:Scyller Borglum, Republican legislator from Rapid City, announces U.S. Senate candidacy

Although Rounds and U.S. Rep. Dusty Johnson haven't formally announced their candidacies for 2020, they've started making campaign appearances at parades or fundraisers.

The South Dakota Democratic Party is "actively recruiting" candidates for statewide, county and city-level offices and the party is looking forward to a "competitive 2020 election," said party Chair Paula Hawks.

"We hear every day from South Dakotans who are frustrated by the lack of leadership in Washington and Pierre, and know that voters are looking to us for candidates who will support common sense values," Hawks said.