All three of New York’s ballot-qualified minor parties cross-endorsed a major party presidential candidate this year. Here are the percentages of the vote received by each of those parties, for the office at the top of the ticket (President in presidential years, and Governor in mid-term years) for the last six elections:
Conservative Party: 1998 7.36%; 2000 2.12%; 2002 3.86%; 2004 2.10%; 2006 3.80%; 2008 2.24%.
Independence Party: 1998 7.69%; 2000 .36%; 2002 14.28%; 2004 1.14%; 2006 4.30%; 2008 2.15%.
Working Families Party: 1998 1.08%; 2000 1.30%; 2002 1.98%; 2004 1.81%; 2006 3.50%; 2008 2.09%.
During these years, the Conservative Party has always cross-endorsed the Republican nominee for the office at the top of the ballot, and the Working Families Party has always cross-endorsed the Democratic nominee for the top office. Therefore, their percentages are fairly stable. Both of them did slightly better in 2008 than they had done in 2004.
The Independence Party always nominated someone for the topmost office who was not a major party nominee, during the period up until 2006. But in 2006 it cross-endorsed the Democratic nominee, and in 2008 the Republican nominee.