It does not seem like one vote can make a difference. every eligible person should vote.
which revision offers the most improvement in sentence fluency?
although it does not seem like one vote can make a difference, every eligible person should vote.
it does not seem like one vote can make a difference, although every eligible person should vote.
it does not seem like one vote can make a difference because every eligible person should vote.
since it does not seem like one vote can make a difference, every eligible person should vote.