Someone said :
No! You don't suspend democracy because of those who don't want it. It makes these fuckers win. And they should never win!!
At the same time, these campaign events mobilize the police and the army to protect the high-profile campaigners.
Which means that such resources cannot be used to investigate or protect. Thus, it makes sense to cancel a number of high profile events, which are only campaigning after all and not worth the lives they could help protect.
And that energy saved campaigning less can help ensure that the vote itself is much more secure; that the police is rested enough, to ensure the security on the day of the vote itself.
I would oppose canceling or postponing the election itself, but I see the logic of not doing high-profile campaigning events for a day or two. It does not mean door-to-door campaigning has to stop either...