It’s true. Take a look at this USA Today county-by-county 2004 election map:
http://images.usatoday.com/news/politicselections/elections2004/_images/2004countymap-final2.gif
Most US counties (including New York State) are red...overwhelmingly.
In the west many of the blue areas are Indian reservations with only a handful of people.
The Founding Fathers were well aware of the social dangers presented by large densly populated areas which is in large part why we have an electoral college and up until the 17th Amendment did not have direct election of the US Senators.
Presently, a candidate for US Senate only has to focus efforts on a few major population centers and can ignore vast swaths of the state. Ted Kennedy and John Kerry win the Boston vote and there is nothing the rest of the voters of Massachusets can do about it.
Without the 17th Amendment, people across an entire state will have more say in who their US Senators are because by casting their votes for State Legistators, they will indirectly cast their votes for US Senate as the Founding Fathers intended. Gone will also be the mountains of cash needed to run for the US Senate. Lobbyists also won't be happy. Liberals especially won't be happy.