WASHINGTON (NEXSTAR) – Democrats are moving quickly to swap out the top of their presidential ticket. On Wednesday, party leaders met to come up with rules for how to choose their party’s nominee. 

Vice President Kamala Harris is racking up support from Democrats since President Joe Biden dropped out of the race Sunday, she’s collected tons of campaign contributions and endorsements. 

Harris is not officially the Democratic party nominee yet. Democratic National Committee Chair Jamie Harrison promises the party will have an open process to officially select their nominee. 

“As a party we have an obligation to design and implement a fair nomination process for delegates to officially express their preferences through a vote,” Harrison said. 

A majority of delegates say they plan to vote for Vice President Harris, but Harrison stressed they don’t have to. 

“Delegates are free to support who they choose, and we are glad that they are engaging in this important moment in history,” Harrison said. 

At their Wednesday meeting the DNC rules committee set parameters for candidates to declare they are running and approved a threshold of support they have to meet to be considered. 

So far, Vice President Harris is the only one vying for those votes. If it stays that way DNC leaders say they expect to hold a virtual roll call vote on August 1st. 

If more Democrats jump in the race, they plan to hold that virtual vote on August 3rd. 

“A process must be flexible and our timeline accounts for multiple scenarios.” DNC Rules Committee co-chair Leah Daughtry said. 

They say the presidential nominee will pick a vice-presidential nominee by August 7th. 

There’s a reason the DNC isn’t waiting for their convention in late August. Each state has different election laws, and some states have ballot deadlines coming up. 

“A virtual roll call is the safest way to ensure that our Democratic candidates will be certain to appear on the ballot in all 50 states,” California Lt. Gov Eleni Kounalakis said. 

Democrats say, regardless, they expect to face legal challenges from Republicans over the swap.