I know many Dems definition of pro choice doesn't include the goal of reducing the number of abortions. But Dem positions like paid parental leave, healthcare access, social safety nets, birth control do reduce the number of abortions, while the GOP prolife ultimate "victory" has increased them.
If you include opposition to the death penalty in the definition, Democrats have been more likely to be "pro-life" than Republicans for decades. www.washingtonpost.com/politics/202...
The term has generally been used in the abortion debate. Apply it to the death penalty, too, and patterns shift.
So, by practically every definition, Dems are more pro life from womb to tomb. My advice would be to take up the mantle and make the GOP try to fight you on it. Every time they do, they're going to look like weirdos and you can keep trying to promote human flourishing.