Depends who is defining it. The MSM defines someone who has 90% core liberal values and 10% conservative values, a 'moderate', with the exception no one who is pro-life is ever a moderate. If Ted Kennedy for some odd reason became pro-life, he would be a 'conservative' by the MSM definition.
In the 2000 GOP race, there was one candidate, who wanted to raise minimum wage, link human and civil rights to free trade, opposed flat tax, consumption taxes, and big tax cuts, he also was opposed to privatizing social security.
His name was Gary Bauer.
I have yet to see him classified as anything other then right wing, conservative, or far right wing.
His views on economics and finance were at best populist, at worst, downright liberal, and he is still called a "right wing nut".