Incumbent Jeanie Riddle no longer has a primary election battle, but will face a Democratic challenger in November.
And Gov. Jay Nixon has two challengers in the Aug. 7 Democratic primary, while Jefferson City resident Leonard Steinman filed Friday as a Libertarian candidate, setting up a primary election contest in that party.
The filing deadline was extended until 5 p.m. Friday in the governor's race and several legislative contests, because of candidate withdrawals at the beginning of the week.
In Riddle's case, no one took advantage of the extension, leaving her as the only Republican, with Holts Summit Democrats Pamela (Pam) Murray and Dennis D. Johnson facing each other in the Aug. 7 primary election for the right to face Riddle on Nov. 6.
The new Missouri House 49th District covers southern Callaway County and a small area just west of Jefferson City in Cole County.
Filing for the governor's race also was extended until Friday evening, after Steinman withdrew from the Democratic primary Monday - and filed as the Constitution Party's only governor candidate.
He's said he made that switch because he's been ignored at some Democratic functions where other candidates were recognized.
But he filed Friday morning as a Libertarian Party candidate, after the Constitution Party rejected his filing fee.