Several governors, notably Democrats Pat Quinn in Illinois & David Paterson in New York, and Republicans Jim Gibbons in Nevada & Rick Perry in Texas, face potentially serious challenges in their own respective parties' primaries this year.

Political Junkie, of course, has been and will be continuing to cover these races in depth. But for now ...

Here's a post-World War II state-by-state look at the last time an incumbent governor was denied renomination in his or her own party for another term. It's a list that really, you shouldn't live without:

ALABAMA: 1970 — Albert Brewer lost to George Wallace (D primary runoff)

ALASKA: 2006 — Frank Murkowski lost to Sarah Palin (R primary)

ARIZONA: 1950 — Dan Garvey lost to Ana Frohmiller (D primary)

ARKANSAS: 1954 — Francis Cherry lost to Orval Faubus (D primary runoff)

FLORIDA: 1966 — Haydon Burns lost to Robert King High (D primary runoff)

GEORGIA: 1948 — Melvin Thompson lost to Herman Talmadge (D special primary)

IDAHO: 1966 — Robert Smylie lost to Don Samuelson (R primary)

ILLINOIS: 1976 — Dan Walker lost to Michael Howlett (D primary)

IOWA: 1948 — Robert Blue lost to William Beardsley (R primary)

KANSAS: 1956 — Fred Hall lost to Warren Shaw (R primary)

LOUISIANA: 1991 — Buddy Roemer (R) lost to Edwin Edwards (D) (open primary)

MARYLAND: 1978 — Blair Lee (acting governor) lost to Harry Hughes (D primary)

MASSACHUSETTS: 1982 — Ed King lost to Michael Dukakis (D primary)

MISSOURI: 2004 — Bob Holden lost to Claire McCaskill (D primary)

MONTANA: 1980 — Tom Judge lost to Ted Schwinden (D primary)

NEW HAMPSHIRE: 1972 — Walter Peterson lost to Meldrim Thomson (R primary)

NEW JERSEY: 1973 — Bill Cahill lost to Charles Sandman (R primary)

OKLAHOMA: 1974 — David Hall finished third in the D primary

RHODE ISLAND: 1994 — Bruce Sundlun lost to Myrth York (D primary)

SOUTH DAKOTA: 1994 — Walter Miller lost to Bill Janklow (R primary)

TENNESSEE: 1952 — Gordon Browning lost to Frank Clement (D primary)

TEXAS: 1978 — Dolph Briscoe lost to John Hill (D primary)

UTAH: 2004 — Olene Walker denied nomination at R convention, won by Jon Huntsman

WASHINGTON: 1980 — Dixy Lee Ray lost to Jim McDermott (D primary)

Tags: A Look Back in Politics