The House has voted 54 times in four years on Obamacare. Here’s the full list. (Washington Post, 3/21/2014
GOP Lawmakers Vote To Repeal Obamacare, Again, On Groundhog Day. (ThinkProgress, 2/2/2016)
And then there's the wingnut point of view.
OOOOOOOOOOOOOOH!!! For those who keep saying the GOP has done nothing about Obamacare with their majority, check out the numbers. They tried to repeal Obama’s crap law 52 times. (WorldNetDaily, 10/21/2016)
The numbers fluctuate from source to source, but it all boils down to wasted time on a silly and meaningless vote.