This is indeed a problem and an interesting development at the same time.In more recent times the margins are absurdly tight. For the last 40 years Presidents only get single digit margins.
These small margins are indicative of a divided nation.
In Germany there's a different problem: I can't even remember when one party had over 50% of all voter's votes. It's all coalitions and then you have parties in there with less than 20% or even less than 15% of voter's votes.
Just imagine this: the party with the highest vote count has less than one third of all votes and the two parties building the government with that party have each less than 1/5 of all votes?? Bonus points when the parties in the coalition have colliding agendas in more than one important point, e. g. the social security system.
How could that possibly go wrong? /s
Divided nation? Definitely.