From one fellow Perot player to another, let's see if we can figure this out:
Energy: There should be a CP (command points) marker next to the candidate's portrait on the lower left of the screen. Different activities take different amounts of CPs, and you can only spend so many in a turn. If you overspend your CPs, your candidate loses energy over and beyond the amount he/she normally loses on activities; the more you overspend, the worse the effect is.
If you want your candidate to have more CPs, do the "Organize Campaign" activity until your candidate's "How Well Organized" stat levels up. Each additional HWO point (up to 5) gives you an additional CP per day, or 7 CPs/week in the Primaries. (This explains why the other candidates don't have this problem as badly - Perot starts with a lower organization due to his third-party status.)
High Score Bug: You're not alone. I've been getting the same bug on the latest editions of two other games (PM Forever Canada '08 and Premier Forever Alberta), while another forum regular has gotten it on a third (Chancellor Forever). With P4EP having the same problem, something is up.
Heads-up to the Admin: can you check this out? I would have sent the saved game like you asked for last time, but it seems that (at least for PM4E on my computer) the saves are only viewable within the game and not from the files. Besides, since this is a multiple-game issue, it's likely an game engine or system concern.