Earlier quoted context omitted.
As a corporation, or are you counting their employees?
In general, corporations do that more or less to hedge their bets. They want the candidate that they support to win, but if the other candidate wins, they will be able to settle with at least some influence on that other candidate through that funding.
In fact, this explains a lot of things. Back in the day when people got long distance telephone service from a different company than their local service, there used to be a pro-life phone company that advertised that all the other long distance companies like AT&T and MCI donated a ton of money to pro-choice organizations so you'd better switch to the pro-life phone company. But why the hell would a phone company care about abortion? They didn't, they just employed a lot of people and some of them happened to make political donations to pro-choice causes.