The U.S. authorities have provided $11.4 million for the organization of the May 25 presidential elections in Ukraine, U.S. State Department spokesperson Jen Psaki said at a briefing on Tuesday.

"We've also provided a total of $11.4 million to support free and fair elections in Ukraine, and that goes to a range of activities on the ground," she said.

According to Psaki, the OSCE's election monitoring agency, ODIHR, has already deployed 100 long-term observers to Ukraine and an additional 900 short-term observers.

"I believe… it will be the largest monitoring mission in ODIHR's – in their organization's history," she said.

The United States will provide approximately one-tenth of the observers. These 1,000 observers will be joined by more than 100 members of the OSCE parliamentary assembly, including some members of Congress, she said.

She quoted the Central Election Commission's data that out of 213 district election commissions nationwide, eleven district election commissions in Donetsk and Luhansk have closed due to pro-Russian militants' actions.

But even in Donetsk and Luhansk, 23 of 34 district election commissions are functioning despite the difficult environment, she added.

In addition, the Ukrainian government has established alternative voting arrangements for residents of Crimea and the town of Sloviansk to allow individuals to cast their vote, Psaki said.

"So individuals in Crimea can cast their vote in mainland Ukraine; individuals in Sloviansk can cast their vote just outside of town as well," the U.S. State Department's spokesperson said.