The condenser mic with cardioid pattern is the frequently choice for vocal recording. But let's see the frequency responses one multi-pattern budget mic (about 500$).

On this figure its frequency response on cardioid pattern. If you look on high mids and highs you’ll see that 2kHz is boosted by 2 dB and on 5kHz and higher boost already about 4 dB and more (note that the difference in 3dB means 2 times louder). This frequency response is merit and demerit at the same time, but in most cases its bad for vocal recordings (strings, woodwind instruments, electric guitar etc.) cause area were are hiss and sibilant of the voice is boosted.

On second figure the frequency response of the same mic but with omni polar pattern and its flat from 50 Hz until 6kHz!. This mic have the same frequency response with figure 8 polar pattern.
Summary:
1 The voice would be more natural if it recorded with omni or figure 8 polar pattern.
2 There is less de-essing needed when mixing. Its may be without de-essing at all.
3 There is more room sound would be in record with omni but its not wrong or bad. In mix the voice (or instrument) would be wider and more thick.
4 With figure 8 polar pattern there are less room reflections from the angles at 90 and 270 than with cardioid.

P.S. The mic at higher price have more flat frequency response at cardioid polar pattern, but regularity is the same.