Presidential candidate Hillary Clinton speaks at rallies in Bay Area

OAKLAND, Calif. (KGO) -- Democratic candidates Hillary Clinton and Bernie Sanders are making the rounds ahead of Tuesday's primary.

In the race for the White House, Clinton won the Democratic primary in Puerto Rico Sunday. She picked up most of the 60 delegates available, putting her closer to the Democratic nomination.

Hundreds of thousands of voters have already cast their ballots.

A steady flow of foot traffic was at the Alameda County Registrar of Voters' Office Sunday. "We're still here opening up ballots that we've received in the mail yesterday, so it's a full staff," Alameda County Registrar of Voters' Office employee Tim Dupuis said.

Aaron McCreary voted for Senator Bernie Sanders. "The idea of shaking up money and politics is really appealing to me," he said.

To his dad as well, but not to his mom who says she's voting for Clinton. "I think we all agree that we like what Bernie is saying, but we don't necessarily agree with his leadership capabilities," Renee Robin said.

Early in the day Clinton spoke at Greater St. Paul Church in Oakland. "We need more apprenticeship programs, more skills programs, more tech programs, and what better way to do that, mayor, than right here in Oakland," she said.

"Today we saw Hillary Clinton in a way we haven't seen her before because she was very personable," Greater St. Paul Bishop Joseph Simmons said.

"I know my bishop supports her 110 percent, but I don't know," Vashti Gibson said.

It's voters like Gibson both Democratic candidates are hoping to court before Tuesday.

On Monday, Sanders will hold a rally at Crissy Field.

In the meantime Sunday afternoon, Clinton spoke to community leaders at Good Day Cafe in Vallejo.

Clinton supporters there were hoping to catch a glimpse of the presidential nominee, but she entered the cafe through a back door. "I didn't get a chance to see her so I'm kind of bummed out about that," Clinton supporter Rick Williams said.

"All of this attention is bringing our voters out, which is what we always like to see," Dupuis said.

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