They kinda don't though, the voter turnout is at the lowest it's ever been
The real issue is there's 5 groups;
- don't vote "What's the point?"
- don't vote "It's a safe seat anyway"
- do vote, but for some tiny party, and the system punishes anyone who doesn't vote for the BIG 2
- do vote, but for GoP (slight majority)
- do vote, for Dems (slight minority)
The majority are those first 3 groups.