For starters they more or less blindly went with their candidate until forced to change. I don't know who should have seen Biden was no longer competent, but the signs should have been there - those people should have made Biden resign a year before the primary season started.
Of course the republicans are just as guilty as democrats in letting their people keep running as they get old in office.
I have a personal policy of never voting for someone who has held the office more than 1 time. If more people would do this we would solve a bunch of problems. (2 terms is a good number if you like the person since they have some experience in the second term). This also means I oppose too small districts in local issues - if there are not several people interested in running for the office than either it shouldn't be elected (why do I elect my country treasurer - it shouldn't have any power), or the district is too small.
Of course the republicans are just as guilty as democrats in letting their people keep running as they get old in office.
I have a personal policy of never voting for someone who has held the office more than 1 time. If more people would do this we would solve a bunch of problems. (2 terms is a good number if you like the person since they have some experience in the second term). This also means I oppose too small districts in local issues - if there are not several people interested in running for the office than either it shouldn't be elected (why do I elect my country treasurer - it shouldn't have any power), or the district is too small.