The Senate is voting on a plan to repeal Obamacare without a replacement

On Wednesday, the Senate will vote on a bill to repeal the Affordable Care Act.

The bill, the "Obamacare Repeal Reconciliation Act," will be introduced into the healthcare debate that began Tuesday. The amendment was introduced by Sen. Rand Paul of Kentucky, who has been a proponent of a straight Obamacare repeal.

The legislation is part of a series of afternoon votes. Like the repeal and replace plan that failed to get enough support in a vote Wednesday, it will require 60 votes to pass. It's almost certain to be defeated, since all Democrats are expected to oppose it.

Here's what's in the Obamacare Repeal Reconciliation Act:

• It's is nearly identical to the bill that was vetoed by President Barack Obama in 2015.
• The legislation would repeal all the provisions put in place by the ACA, including key taxes and tax credits.
• It also would repeal the Medicaid expansion that some states opted into.
• It - like the "skinny repeal" plan that's also gaining traction in the Senate - would get rid of mandates for employers and individuals to provide and have insurance.
• The legislation would prevent Medicaid from funding Planned Parenthood for a year, and wouldn't allow premium tax credits to fund abortions. Including sections of the bill would require the bill to have 60 votes to avoid a filibuster, according to the Senate parliamentarian.
• The repeal would begin in 2020.

According to the Congressional Budget Office, 17 million fewer Americans would have health insurance in 2018 if such a plan became law, a number that would grow to 32 million by 2026. By 2026, health insurance premiums are expected to double. Cuts to Medicaid would hit $842 billion by 2026.