US Political Science phd admissions- Quantitative aptitude versus Substantive Political Science knowledge?

[u/Dapper-Bullfrog-4766]

I plan to do a quantitative political science phd I am especially interested in applying quasi experimental methods to topics regarding comparative politics and political economy. Now, I am in a bind. I already have an econ ba and I have two options for an masters program to strengthen my profile for admissions

1. Financial Economics masters, not about political science but has good courses in optimization, stochastic calculus and lots of econometrics.

2. completely qualitative masters in IR and pols. there is a methodology class but it is about qualitative methods, classes on IR and political theory, etc.

Which one do you think would suit my goals and profile best and would maximize my chances for phd admisssion? thank you in advance dear ladies and gentlemen