"We still have thousands of ballots left to count, but I feel very good about where we are today," Bera said as polling officials were counting votes.
Bera has so far got 53,272 votes as against Ose's 56,284 votes.
Two years ago in 2012, when Bera created history by being the third ever Indian-American to be elected to House of Representatives, it took several weeks before the final results were declared.
Ballots that were yet to be counted include vote by mail (VBM) ballots received but not yet signature verified, VBM ballots dropped off on Election Day, and provisional ballots, he said.
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The Sacramento County Registrar must provide the Secretary of State a count of outstanding ballots by 5pm today.
After the Sacramento County Registrar of Voters counted these types of ballots, Bera won with by a margin of 9,191 votes.
After Dalip Singh Saund and Bobby Jindal; Bera, a physician and son of immigrants from India, is the third ever Indian-American Congressman.
Former US President Bill Clinton and First Lady Michelle Obama had campaigned for him.
Bera is also very active in the Indian-American community and a strong advocate of India-US relationship.