Des Moines, Iowa (CNN) Julián Castro plans to refocus his 2020 presidential campaign on Iowa, Nevada and Texas in the coming days and is supporting his staffers looking for jobs with other campaigns, sources familiar with the plans tell CNN.

The former Housing and Urban Development secretary has struggled for months to raise money or get attention in the still large field of Democrats vying for the chance to take on President Donald Trump. Castro spent the final 10 days of October pushing to raise $800,000 and pledged to donors that he would drop out if he failed to hit that goal. The campaign narrowly hit the goal with hours to go on October 31.

But it was clear inside the San Antonio-based campaign even before the push began that the future was uncertain for the Texas Democrat. The Castro campaign senior leadership told staffers before they announced their fundraising push that whether or not they hit the number, staff should feel free to look for other opportunities.

And even when the campaign hit the fundraising goal, Castro's senior aides again told staff that the campaign would likely have to make staffing adjustments to press on.

That has led some Castro aides to look for jobs with other campaigns.

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