Democratic presidential hopeful Hillary Clinton is heading back to Iowa this weekend, hoping to rally support from caucus-goers.

Clinton will be in Sioux City on Saturday evening to attend a house party with supporters. The event will be simulcast at hundreds of other house parties across the country. 

On Sunday, Clinton will be at the Iowa State Fairgrounds in Des Moines to host a launch party. The event is open to the public and doors open at 10:30 a.m. Those interested in attending should RSVP. She will visit Burlington Sunday afternoon to speak with voters at another house party.

According to the Hillary for America Campaign, Clinton will continue to focus on building the grassroots organization in Iowa needed to earn the nomination.

Clinton is the current Democratic frontrunner, according to the Bloomberg News/Des Moines Register Iowa Poll released May 31. Of likely caucus-goers surveyed, 72 percent said Clinton was their first or second choice.

Three other Democrats have declared their candidacy for the presidency: U.S. Sen. Bernie Sanders of Vermont; former Maryland Gov. Martin O’Malley; and Rhode Island Gov. Lincoln Chafee.