On a 35-29 vote, the Minnesota Senate gave preliminary approval this morning to a nearly $1 billion income tax increase that would boost taxes Seven DFL senators, mostly from swing districts, joined Republicans in opposing the bill, saying that the proposed new top tax rate of 9.7 percent was just a little too rich. “We’re pushing it (tax increases) a little hard this year,” said Sen. John Doll, DFL-Burnsville, who replaced a Republican in last fall’s elections. “I do have lots of folks who would be affected by this and it puts an extra burden on them.” Senate Majority Leader...