Are you sure that ALL IFB's allow women to vote?
The first church I pastored did not allow the women to vote when I first came there. We made a study of the subject, and came to the conclusion they should. I wrote the following, at some point afterward. I still agree with what I wrote then.
SHOULD WOMEN VOTE?
Yes. From the Bible examples of congregational decisions, it appears that the women took part. Acts 1:12-26 records the selection of one to fill Judas’ office. The assembly was made up of about 120 people (v.15), which included women (v.14). They, the 120, appointed two men, and they, the 120, gave forth their lots and chose Matthias. Therefore, this selection process included the women.
Acts 6:1-7 tells of the election of the first seven deacons. The seven were chosen by “they” -- which refers to the multitude of the disciples (vs.1,2,5), and this included widows (who are always women).
In the council meeting of Acts chapter 15, the final decision was made by the whole church (v.22), which included women as well as men. We concur from these three examples that the women should participate in the process.
Notice that in all three instances that, although the women did vote, the men were the ones who discussed the business, made the suggestions, and provided the leadership.