WI Ronald Reagan Was Elected US President In 1968?

What if Ronald Reagan won the presidency of the United States in 1968, rather than 1980 as IOTL? Reagan had been speculated as a presidential candidate ever since he was elected Governor of California in a landslide in 1966. In 1968, Reagan made a last-minute bid for the nominationm in 1968(he won the popular vote in the primaries, but that was mainly because he got 100% in the California primary), and he got 182 votes at the convention and nearly denied Nixon the nomination. If Reagan had entered the race earlier, he likely would have denied Nixon a majority and won a majority at the convention. If Strom Thurmond had endorsed Reagan, not Nixon, then the Southern delegations would have gone to Reagan and he would have gotten a big boost because of the 'unit rule' in Southern delegations, which dictated all delegates support the majority choice of the delegation. Nixon only got 26 more votes than 50% at the RNC, it would have been relatively easy to deny him the majority and then his support, which was broad but shallow, would likely have fallen and Reagan would have won the delegations of the South and West and been chosen as the Republican nominee.
So, Governor Ronald Reagan of California, a staunch conservative, is chosen as the 1968 Republican nominee. Would Reagan be able to win? He was less polished than in 1968 and more conservative, Democrats would seek to define him as Goldwater 2.0. His views may be too extreme for the public without the perfect storm of stagflation, the foreign policy failures and Carter's failed presidency in 1980. However, Democrats always underestimated Ronald Reagan. Pat Brown in 1966 saw him as a Goldwater-like candidate, easy to beat, and was crushed in a landslide. Reagan would be able to ride the conservative backlash in 1968 to liberalism with his charisma. While Nixon only got 43.4% of the vote in 1968, 56.9% of the vote went to conservative candidates, as both Wallace and Nixon were candidates opposed to liberalism. Wallace may not have run with Reagan as the nominee or got reduced support, and his voters would have gone to Reagan. Reagan may also have debated Humphrey, unlike Nixon, as the charismatic Reagan and underdog Humphrey would both want a debate and that could result in a Reagan win like in 1980. One wildcard is that the Paris Peace Talks would not be sabotaged by Nixon as IOTL, and the Democrats could pull an October Surprise. Let's say though that Reagan narrowly wins. How would his presidency go? Would he be able to push through a Reagan Revolution 12 years early? How would he handle Vietnam? How would he handle the economy? What would be the effect on US politics and the conservative movement? What would be the effects? What if?