Colorado was a fairly safe Republican state at that time. Clinton wouldn't have won it in '92 if not for Perot.
False. Perot, pro-choice, pro-gay, anti-NAFTA only helped Bush stay in the race when he re-entered. Clinton was winning by a landslide nationally from June-October 1992, when Perot wasn't in the race. Perot also ran best in states which either favored one candidate lopsidedly or had few electoral votes anyway. Bush I's approvals were in the tank for most of 1992, much lower than Obama's current numbers, closer to Jimmy Carter's in 1980.
Answer for Clinton not winning a bigger landslide in 1996: Ross Perot took votes from people who in general weren't satisfied with the system at all. Also, Clinton, knowing he could go to big media markets to break 50%, decided to try to win Dems more seats in the House and Senate. Even he admits this in his autobio. Dumb move on his part: not getting 50%, I'm convinced, severely hampered his ability to govern BOTH terms, yet he was far more effective than Barack Hussein Obama.