Demonstrators swarmed Capitol Hill Thursday night as Senators gathered inside to debate the GOP's bill to repeal ObamaCare.

Hundreds of protesters took to the streets for a demonstration organized by Planned Parenthood Thursday night, carrying signs and banners reading "Don't take away our healthcare" and "I stand with Planned Parenthood."

Planned Parenthood chief Cecile Richards spoke to demonstrators, urging them to continue their resistance and praising them for throwing "sand in the gears" of Congress with their protests.

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The Senate released a skinny ObamaCare repeal bill that defunds Planned Parenthood for a year, permanently eliminates the individual mandate and repeals the employer mandate for eight years.

The bill, titled the Health Care Freedom Act, also repeals the medical device tax for three years and increases contribution limits to Health Savings Accounts for three years.

A vote on the bill is expected after midnight. Lawmakers could then offer amendments to the legislation.