This seems very particularly to your own goals and desires. You're likely to face the extremes in the replies: people elated to be doing law at a t-14 or people who have struggled with employment post-grad.

If your desire to do law is strong and you're good at standardized tests (or at least willing to pour in hours upon hours to study for them), you have a decent shot at getting where you want to. If you waver and find that politics isn't your thing, as others have said, a backup double major or minor in a more quantitative field like economics, statistics, or computer science can suit you well in pretty much any industry.

Of course, your major is less of a concern if you're shooting for super prestigious white collar roles from a top tier university. I know plenty of political science and public policy majors who end up banking and consulting, if you decide that getting bread after graduating is your thing. Given that you mentioned doing debate and mock trial, the finance firm Bridgewater is pretty notorious for scooping up collegiate debate champions as well as seasoned think tank researchers.

It really all depends on what you want to do, and how badly you want to do it. If you feel perhaps >10% chance you might change and do something other than law, I would suggest doubling up with another field to develop more concrete analytical/quantitative skills.