Wrong again. He's held a majority of the same positions since his first ventured into politics in 1994.
Literature from the Romney campaign in 1994 reveals the truth about Romney's conservative positions on the issues in the Senate race. One campaign flyer unearthed from the 1994 race lists a side-by-side comparison of positions held by Romney and Kennedy for 24 election issues.
In the 1994 Senate race, Mitt Romney held the solid conservative position for 23 of the 24 issues listed; the only exception being the pledge to maintain the status quo in Massachusetts regarding a woman's right to choose. A pro-choice position in Massachusetts in 1994 was a socially moderate stance accommodating the large majority opinion of voters in the state.
However, it's understandable how a first-time candidate in 1994, and former businessman, running a crusade for fiscal conservatism with solid conservative positions on crime, welfare, the economy, foreign policy, school choice, health care, and congressional reform might accept the status quo on a social issue respecting the liberal constituency he would represent.