1995 Bronco electrical issue

I went to start my '95 Bronco this morning, put the key in and nothing. Then when I did it again, there was electricity. The dash lit, up, bell went off, etc. I was able to start it, however, my radio lost all it's presets, so apparently it lost connectivity to the battery. I'm afraid this is only going to get worse. Any suggestions on what might cause this??

Old, failing battery.
Poor connections to the battery.

I'd check the terminals on your battery cables, first. If those are good, make sure you don't have an open circuit somewhere. My truck kept doing that for years in the cold. Once I did the terminals, and checked for open circuits, it was fine.