The float switches are fairly prone to gunking up from all the trash in the bilge....
I'd just rip the pump out and replace it. It's really very simple.. simply unscrew it from the keel.... take it to a local boat store/chandellers and buy the most similar one you can (or more powerful if poss). Then just re-wire it in (being sure to keep any connections above the water line)
There's every chance the blower and possibly bilge have fused, so stick your head under the dash and find your fuse panel.... check for blown fuses - might be as simple as a 75 cent fix!
I'd also totally agree with what SeaPuppy has to say on WD40'ing EVERYTHING and checking and connections (re-greasing) anything that got wet.
Hope that helps!