A British lawmaker has delayed her scheduled cesarean section by two days so she can vote against Prime Minister Theresa May’s Brexit proposal.

Tulip Siddiq, a Labour member of Parliament for London constituency Hampstead and Kilburn, said Monday that she pushed the birth of her child back until Thursday.

Siddiq, 36, was advised by doctors to give birth to her second child on Monday or Tuesday due to gestational diabetes, but said they agreed to let her deliver on Thursday instead, despite the “high-risk” pregnancy.

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“If my son enters the world even one day later than the doctors advised, but it’s a world with a better chance of a strong relationship between Britain and Europe, then that’s worth fighting for,” Siddiq told the Evening Standard.

Her husband will take her to Tuesday’s vote at Parliament in a wheelchair, according to the paper.

Members of Parliament who are pregnant, new mothers or sick can miss votes through a policy in which they are “paired” with a member of the opposition party who agrees not to cast a vote to keep results fair.

But Siddiq said she cannot trust that system after Conservative Party chairman Brandon Lewis violated a pairing agreement with Liberal Democrat Deputy Leader Jo Swinson in July. He later apologized, saying he made an “honest mistake.”

“If the pairing system is not honored, there’s nothing I can do, and it’s going to be a very close vote,” Siddiq told the Standard. “I’ve had no pressure at all from the whips to come and vote but this is the biggest vote of my lifetime.”

“I am thinking about my child’s future when I made this decision — his future in the world,” she added. “If it comes to an absolute emergency, I will of course prioritize the baby’s health.”

Siddiq also called for proxy voting, saying it’s a necessary step to get more women involved in politics.

Tuesday’s vote ends five days of debate on May’s proposed Brexit deal. If the deal fails in Parliament, May will get three days to come up with a “plan B.” The prime minister has repeatedly warned of the possibility of a “no-deal” Brexit if Parliament does not support her plan.