In the film Lincoln the House was arguing whether emancipation of the Negro meant Negroes could vote. A Representative arguing against the amendment asked "How would you feel if Negroes could vote?" The response was divided by party but did not engender a loud, raucous response. He then asked "How would you feel if women could vote?" The entire House rose as one (well, almost the entire house) yelling loudly. Raucous is a mild description. As this movie is based on Doris Kearnes Goodwin's well-researched book, it is highly likely that this occurred as pictured. It certainly helps explain why Negro Men got the vote 43 years before women of all colors.
The lesson to be learned is that this was a right that was hard fought and should be exercised. Interestingly enough the fears of the 1869 Congress were realized in the recent Federal Election.